title:
Measurements of the branching fractions of exclusive charmless B meson
  decays with $\eta^prime$ or $\omega$ mesons

abstract:
  We present the results of searches for B decays to charmless two-body final
states containing $\eta^\prime$ or $\omega$ mesons, based on 20.7 fb$^{-1}$ of
data collected with the BABAR detector. We find the branching fractions ${\cal
B}(B^+\to\eta^\prime K^+) = (70\pm 8\pm 5)\times 10^{-6}$, ${\cal
B}(B^0\to\eta^\prime K^0) = (42^{+13}_{-11}\pm 4)\times 10^{-6}$, and ${\cal
B}(B^+\to\omega\pi^+)=6.6^{+2.1}_{-1.8}\pm 0.7)\times 10^{-6}$ where the first
error quoted is statistical and the second systematic. We give measurements of
four additional modes for which the 90% confidence level upper limits are
${\cal B}(B^0\to\omega K^0) < 13\times 10^{-6}$, ${\cal B}(B^+\to\eta^\prime
\pi^+) < 12\times 10^{-6}$, ${\cal B}(B^+\to \omega K^+) < 4\times 10^{-6}$,
and ${\cal B}(B^0\to\omega\pi^0) < 3\times 10^{-6}$.


title:
A Search forthe Scalar Top Quark in $p \bar{p}$ Collisions at
  $\sqrt{s}=$ 1.8 TeV

abstract:
  We have performed a search for scalar top quark (stop) pair production in the
inclusive electron-muon-missing transverse energy final state, using a sample
of $p \bar{p}$ events corresponding to 108.3 pb$^{-1}$ of data collected with
the D{\O}detector at Fermilab. The search is done in the framework of the
minimal supersymmetric standard model assuming that the sneutrino is the
lightest supersymmetric particle. For the dominant decays of the lightest stop,
$\bc$ and $\bls$, no evidence for signal is found. We derive cross-section
limits as a function of stop (\stt), chargino (\ca), and sneutrino (\snu)
masses.


title:
Detecting tau-neutrino appearance in the spectra of quasielastic CC
  events

abstract:
  A method for detecting the transition numu->nutau in long-baseline
accelerator experiments, that consists in comparing the far-to-near ratios of
the spectra of quasielastic CC events generated by high- and low-energy beams
of muon neutrinos, is proposed. The test may be accessible to big calorimeters
with muon spectrometry like MINOS, and is limited by statistics rather than
systematics.


title: Confidence Intervals for Poisson Distribution Parameter

abstract:
  Results of numerical procedure of constructing confidence intervals for
parameter of the Poisson distribution of signal events in the presence of
background events with known value of parameter of Poisson distribution are
presented. It is shown that the used procedure has both the Bayesian and
frequentist interpretations. Also the possibility to construct a continuous
analogue of the Poisson distribution to search the bounds of confidence
intervals for the parameter of the Poisson distribution is discussed.


title: Prospects for HERMES Run II

abstract:
  Data taking for Run II of the HERMES experiment will start in late 2001 with
three main physics objectives for the next 4-5 years: a measurement of
transversity distributions, an improved measurement of helicity distributions,
and measurements of exclusive reactions to access Generalized Parton
Distributions.


title:
A Study of B0 -> J/psi K(*)0 pi+ pi- Decays with the Collider Detector
  at Fermilab

abstract:
  We report a study of the decays B0 -> J/psi K(*)0 pi+ pi-, which involve the
creation of a u u-bar or d d-bar quark pair in addition to a b-bar -> c-bar(c
s-bar) decay. The data sample consists of 110 1/pb of p p-bar collisions at
sqrt{s} = 1.8 TeV collected by the CDF detector at the Fermilab Tevatron
collider during 1992-1995. We measure the branching ratios to be BR(B0 -> J/psi
K*0 pi+ pi-) = (8.0 +- 2.2 +- 1.5) * 10^{-4} and BR(B0 -> J/psi K0 pi+ pi-) =
(1.1 +- 0.4 +- 0.2) * 10^{-3}. Contributions to these decays are seen from
psi(2S) K(*)0, J/psi K0 rho0, J/psi K*+ pi-, and J/psi K1(1270).


title: Prompt Photons and DVCS at HERA

abstract:
  A recent analysis of prompt-photon events in ZEUS has led to a new
determination of the effective transverse parton momentum in the proton. The
observation of deeply virtual Compton scattering by ZEUS and H1, including a
first measurement of the DVCS cross section at HERA by H1, is also reported.


title: Evidence for the Decay $D^0\to K^+ \pi^-\pi^+\pi^-$

abstract:
  We present a search for the ``wrong-sign'' decay D0 -> K+ pi- pi+ pi- using 9
fb-1 of e+e- collisions on and just below the Upsilon(4S) resonance. This decay
can occur either through a doubly Cabibbo-suppressed process or through mixing
to a D0bar followed by a Cabibbo-favored process. Our result for the
time-integrated wrong-sign rate relative to the decay D0 -> K- pi+ pi- pi+ is
(0.0041 +0.0012-0.0011(stat.) +-0.0004(syst.))x(1.07 +-0.10)(phase space),
which has a statistical significance of 3.9 standard deviations.


title: Muon Decay Asymmetries from $K^0_L \to \pi^0 \mu^+ \mu^-$ Decays

abstract:
  We have examined the decay $K^0_L \to \pi^0 \mu^+ \mu^-$ in which the
branching ratio, the muon energy asymmetry and the muon decay asymmetry could
be measured. In particular, we find that within the Standard Model the
longitudinal polarization ($P_L$) of the muon is proportional to the direct CP
violating amplitude. On the other hand the energy asymmetry and the
out-of-plane polarization ($P_N$) depend on both indirect and direct CP
violating amplitudes. Although the branching ratio is small and difficult to
measure because of background, the asymmetries could be large $\cal{O}$(1) in
the Standard Model. A combined analysis of the energy asymmetry, $P_L$ and
$P_N$ could be used to separate indirect CPV, direct CPV, and CP conserving
contributions to the decay.


title: Experimental Summary

abstract:
  The experimental results presented at the XXXVI Rencontres de Moriond
Electroweak Interactions and Unified Theories are summarized. The results range
from possible evidence for the Standard Model Higgs boson at LEP2 to searches
for new physics at LEP, the Tevatron and HERA, to precision electroweak and
weak decay measurements, and to the strong evidence for neutrino oscillations.


title:
Measurements of the Suitability of Large Rock Salt Formations for Radio
  Detection of High Energy Neutrinos

abstract:
  We have investigated the possibility that large rock salt formations might be
suitable as target masses for detection of neutrinos of energies about 10 PeV
and above. In neutrino interactions at these energies, the secondary
electromagnetic cascade produces a coherent radio pulse well above ambient
thermal noise via the Askaryan effect. We describe measurements of
radio-frequency attenuation lengths and ambient thermal noise in two salt
formations. Measurements in the Waste Isolation Pilot Plant (WIPP), located in
an evaporite salt bed in Carlsbad, NM yielded short attenuation lengths, 3-7 m
over 150-300 MHz. However, measurements at United Salt's Hockley mine, located
in a salt dome near Houston, Texas yielded attenuation lengths in excess of 250
m at similar frequencies. We have also analyzed early ground-penetrating radar
data at Hockley mine and have found additional evidence for attenuation lengths
in excess of several hundred meters at 440 MHz. We conclude that salt domes,
which may individually contain several hundred cubic kilometer water-equivalent
mass, provide attractive sites for next-generation high-energy neutrino
detectors.


title: Muon Cooling R&D

abstract:
  International efforts are under way to design and test a muon ionization
cooling channel. The present R&D program is described, and future plans
outlined.


title: Flow and non-flow correlations from four-particle multiplets in STAR

abstract:
  Elliptic flow results are presented for Au + Au collisions at $\sqrt{s_{NN}}
= 130$
  GeV in RHIC. This signal is investigated as a function of transverse
momentum, rapidity and centrality. Results from four-particle correlation
analysis, which can filter out contributions to the flow signal from
correlations unrelated to the event reaction plane (``non-flow''), are
presented and compared to the conventional method, in which non-flow effects
are treated as part of the systematic uncertainty.


title: Review of B Physics Results from the LEP Experiments and SLD

abstract:
  A review of b physics results from the LEP experiments and SLD is presented.
Emphasis is given to the determination of the |Vcb| and |Vub| and to the study
of B meson oscillations, which yield bounds on the unitary triangle.


title: Measurement of the Branching Ratio for the Process b -> tau nu X

abstract:
  The inclusive branching ratio for the process b -> tau nu X has been measured
using hadronic Z decays collected by the OPAL experiment at LEP in the years
1992-2000. The result is:
  BR(b -> tau nu X) = (2.78 +/- 0.18 +/- 0.51)% This measurement is consistent
with the Standard Model expectation and puts a constraint of tan(beta) /
M(H+/-) < 0.53 GeV-1 at the 95% confidence level on Type II Two Higgs Doublet
Models.


title: Branching Fraction and Photon Energy Spectrum b -> s gamma

abstract:
  We have measured the branching fraction and photon energy spectrum for the
radiative penguin process b -> s gamma. We find BR(b -> s gamma) = (3.21 +-
0.43 +- 0.27 +0.18 -0.10) 10^(-4), where the errors are statistical,
systematic, and from theory corrections. We obtain first and second moments of
the photon energy spectrum above 2.0 GeV, < E_\gamma > = 2.346 +- 0.032 +-
0.011 GeV, and <E^2_gamma> - <E_gamma>^2 = 0.0226 +- 0.0066 +- 0.0020 GeV^2,
where the errors are statistical and systematic. From the first moment we
obtain (in MS[Bar], to order 1/M^3 and beta_0 alpha_s^2) the HQET parameter
Lambda[Bar] = 0.35 +- 0.08 +- 0.10 GeV.


title: Hadronic Mass Moments in Inclusive Semileptonic B Meson Decays

abstract:
  We have measured the first and second moments of the hadronic mass-squared
distribution in B -> X_c l nu, for P(lepton) > 1.5 GeV/c. We find <M_X^2 -
M_D[Bar]^2> = 0.251 +- 0.066 GeV^2, < (M_X^2 -<M_X^2>)^2 > = 0.576 +- 0.170
GeV^4, where M_D[Bar] is the spin-averaged D meson mass.
  From that first moment and the first moment of the photon energy spectrum in
b -> s gamma, we find the HQET parameter lambda_1 (MS[Bar], to order 1/M^3 and
beta_0 alpha_s^2) to be -0.24 +- 0.11 GeV^2. Using these first moments and the
B semileptonic width, and assuming parton-hadron duality, we obtain |V_cb| =
0.0404 +- 0.0013.


title:
Measurement of the Strong Coupling Constant from Inclusive Jet
  Production at the Tevatron $\bar pp$ Collider

abstract:
  We report a measurement of the strong coupling constant, $\alpha_s(M_Z)$,
extracted from inclusive jet production in $p\bar{p}$ collisions at
$\sqrt{s}=$1800 GeV. The QCD prediction for the evolution of $\alpha_s$ with
jet transverse energy $E_T$ is tested over the range 40<$E_T$<450 GeV using
$E_T$ for the renormalization scale. The data show good agreement with QCD in
the region below 250 GeV. In the text we discuss the data-theory comparison in
the region from 250 to 450 GeV. The value of $\alpha_s$ at the mass of the
$Z^0$ boson averaged over the range 40<$E_T$<250 GeV is found to be
$\alpha_s(M_{Z})= 0.1178 \pm 0.0001{(\rm stat)}^{+0.0081}_{-0.0095}{\rm (exp.
syst)}$. The associated theoretical uncertainties are mainly due to the choice
of renormalization scale ($^{+6%}_{-4%}$) and input parton distribution
functions (5%).


title: On the Rise of the Proton Structure Function F_2 Towards Low x

abstract:
  A measurement of the derivative (d ln F_2 / d lnx)_(Q^2)= -lambda(x,Q^2) of
the proton structure function F_2 is presented in the low x domain of deeply
inelastic positron-proton scattering. For 5*10^(-5)<=x<=0.01 and Q^2>=1.5
GeV^2, lambda(x,Q^2) is found to be independent of x and to increase linearly
with ln(Q^2).


title: Megaton Modular Multi-Purpose Neutrino Detector

abstract:
  This brief note outlines a detector for the Homestake Laboratory and the
physics experiments that might be done with it. The note might go on record as
a letter of intent to be converted to a formal proposal at a later time.


title: Branching Ratio Measurement of the decay K_L -> e+ e- mu+ mu-

abstract:
  We have collected a 43 event sample of the decay $K_L\to e^+e^-\mu^+\mu^-$
with negligible backgrounds and measured its branching ratio to be $(2.62 \pm
0.40 \pm 0.17)\times 10^{-9} $. We see no evidence for CP violation in this
decay. In addition, we set the 90% confidence upper limit on the combined
branching ratios for the lepton flavor violating decays $K_L\to
e^{\pm}e^{\pm}\mu^{\mp}\mu^{\mp}$ at ${\mathcal B}(K_L\to
e^{\pm}e^{\pm}\mu^{\mp}\mu^{\mp}) \leq 1.23\times10^{-10}$, assuming a uniform
phase space distribution.


title: Electromagnetic Radiation Hardness of Diamond Detectors

abstract:
  The behavior of artificially grown CVD diamond films under intense
electromagnetic radiation has been studied. The properties of irradiated
diamond samples have been investigated using the method of thermally stimulated
current and by studying their charge collection properties. Diamonds have been
found to remain unaffected after doses of 6.8 MGy of 10 keV photons and 10 MGy
of MeV-range photons. This observation makes diamond an attractive detector
material for a calorimeter in the very forward region of the proposed TESLA
detector.


title:
Measurement of D^(*+-) Meson Production and F_2^c in Deep-Inelastic
  Scattering at HERA

abstract:
  The inclusive production of D^{*+-}(2010) mesons in deep-inelastic scattering
is studied with the H1 detector at HERA. In the kinematic region 1<Q^2<100
GeV^2 and 0.05<y<0.7 an e^+p cross section for inclusive D^(*+-) meson
production of 8.50+- 0.42 (stat.)^(+1.21)_(-1.00) (syst.) nb is measured in the
visible range p_(tD^*)>1.5 GeV and |\eta_(D^*)|<1.5. Single and double
differential inclusive D^(*+-) meson cross sections are compared to
perturbative QCD calculations in two different evolution schemes. The charm
contribution to the proton structure, F_2^c(x,Q^2), is determined by
extrapolating the visible charm cross section to the full phase space. This
contribution is found to rise from about 10% at Q^2 = 1.5 GeV^2 to more than
25% at Q^2 = 60 GeV^2 corresponding to x values ranging from 5*10^(-5) to
3*10^(-3)$.


title: Results of the Survey on the Future of HEP

abstract:
  The Young Physicists Panel (YPP) summarizes results from their Survey on the
Future of High Energy Physics, which was conducted from July 2 to July 15,
2001. Over 1500 physicists from around the world, both young and tenured,
responded to the survey. We first describe the origin, design, and
advertisement of the survey, and then present the demographics of the
respondents. Following sections analyze the collected opinions on the desire
for balance in the field, the impact of globalization, the necessity of
outreach, how to build the field, the physics that drives the field, and the
selection of the next big machine. Respondents' comments follow the survey
analysis in an appendix.


title:
The Program in Muon and Neutrino Physics: Super Beams, Cold Muon Beams,
  Neutrino Factory and the Muon Collider

abstract:
  We outline in detail a staging scenario for realizing the Neutrino Factory
and the Muon Collider. As a first stage we envisage building an intense proton
source that can be used to perform high intensity conventional neutrino beam
experiments ("Superbeams"). While this is in progress, we perform R&D in
collecting, cooling and accelerating muons which leads to the next two stages
of "Cold Muon Beams" and the Neutrino Factory. Further progress in Muon Cooling
especially in the area of emittance exchange will lead us to the Muon Collider.
A staged scenario such as this opens up new physics avenues at each step and
will provide a long range base program for particle physics.


title: The AMS Time of Flight System

abstract:
  The Time of Flight (TOF) system of the AMS experiment provides the fast
trigger to the detector and measures the crossing particle direction, velocity
and charge. AMS was operated aboard of the shuttle Discovery on June 1998 (NASA
STS-91 mission) and will be upgraded and installed on the International Space
Station at the end of 2003, for 3 years of data taking. The performances of the
TOF during the precursor flight and modifications needed in the final version
of the detector are presented.


title:
First Measurement of Gamma(D*+) and Precision Measurement of m_D*+ -
  m_D0

abstract:
  We present the first measurement of the D*+ width using 9/fb of e+ e- data
collected near the Upsilon(4S) resonance by the CLEO II.V detector. Our method
uses advanced tracking techniques and a reconstruction method that takes
advantage of the small vertical size of the CESR beam spot to measure the
energy release distribution from the D*+ -> D0 pi+ decay. We find Gamma(D*+) =
96 +- 4 (Statistical) +- 22 (Systematic) keV. We also measure the energy
release in the decay and compute Delta m = m(D*+) - m(D0) = 145.412 +- 0.002
(Statistical) +- 0.012 (Systematic) MeV/c^2


title: Electron Identification in Belle

abstract:
  We report on electron identification methods and their performance in the
Belle experiment at the KEK-B asymmetric B-Factory $e^{+} e^{-}$ storage ring.
Electrons are selected using a likelihood approach that takes information from
the electromagnetic calorimeter, the central drift chamber, and the silica
aerogel Cherenkov counters as input. We achieve an electron identification
efficiency of $(92.4 \pm 0.4)%$ with a $\pi^{\pm}$ fake rate of $(0.25 \pm
0.02)%$ for the momentum range between 1.0 GeV/$c$ and 3.0 GeV/$c$ in
laboratory frame.


title: The CLIC Study: Taking the LEP Legacy to the Multi-TeV Frontier

abstract:
  The CLIC Study that aims at a linear collider able to deliver e+e- collisions
at centre-of-mass energies up to 5 TeV with luminosity of 10^35 cm^-2 s^-1 is
presented. Its physics potential is outlined with special emphasis to the
relationships to the experience gained in a decade of e+e- experimentation at
LEP.


title:
A Study of Exclusive Nonleptonic Decays of B Mesons into Final States of
  Strange Mesons and 1S or 2S Charmonia

abstract:
  [abridged] Bound states of heavy quarks can serve as a laboratory for inquiry
into the behaviour of the fundamental strong and electroweak interactions. This
thesis examines observations of B0, B0bar, and B+- mesons produced in
proton-antiproton collisions at centre-of-mass energies of sqrt{s}=1.8 TeV. The
B-meson decay products are recorded using the Collider Detector at Fermilab
(CDF) located on the Tevatron collider at Fermilab, USA. Four B-meson decays
and their charge conjugates are studied: B+ -> J/psi K+, B0 -> J/psi K*(892)0,
B+ -> psi(2S) K+, and B0 -> psi(2S) K*(892)0. Using a data sample corresponding
to a time-integrated luminosity of (109 +- 7)/pb, statistically significant
signals are observed in all the channels. Topological similarities between the
B decays are exploited to measure the six relative branching fractions (Br) of
each channel with respect to the other channels. The ratios involving the B+ ->
J/psi K+ mode are Br(B0 -> J/psi K*(892)0) / Br(B+ -> J/psi K+) = 1.76 +-
0.14[stat] +- 0.15[syst], Br(B+ -> psi(2S) K+) / Br(B+ -> J/psi K+) = 0.558 +-
0.082[stat] +- 0.056[syst], and Br(B0 -> psi(2S) K*(892)0) / Br(B+ -> J/psi K+)
= 0.908 +- 0.194[stat] +- 0.100[syst]. The indicated uncertainties are
statistical and systematic, respectively. In ratios involving unlike B-meson
species, equal production rates for B+ and B0 mesons have been assumed. The B+
-> psi(2S) K+ and B0 -> psi(2S) K*(892)0 reconstructions are the first
observations of these processes at a hadron collider. The branching-fraction
ratio measurements are consistent with phenomenological predictions that employ
the factorization Ansatz, and the derived absolute branching-fraction
measurements are consistent with previous world-average limits and values from
e+e- colliders. [abridged]


title: D* Meson Production in Deep-Inelastic Diffractive Interactions at HERA

abstract:
  A measurement is presented of the cross section for D* meson production in
diffractive deep-inelastic scattering for the first time at HERA. The cross
section is given for the process ep -> eXY, where the system X contains at
least one D* meson and is separated by a large rapidity gap from a low mass
proton remnant system Y. The cross section is presented in the diffractive
deep-inelastic region defined by 2< Q^2 < 100 GeV^2, 0.05 < y < 0.7, x_pom <
0.04, M_Y < 1.6 GeV and |t| < 1 GeV^2. The D* mesons are restricted to the
range ptD* > 2 GeV and |\eta_D* | < 1.5. The cross section is found to be
246+-54+-56 pb and forms about 6% of the corresponding inclusive D* cross
section. The cross section is presented as a function of various kinematic
variables, including z_pom^obs which is an estimate of the fraction of the
momentum of the diffractive exchange carried by the parton entering the
hard-subprocess. The data show a large component of the cross section at low
z_pom^obs where the contribution of the Boson-Gluon-Fusion process is expected
to dominate. The data are compared with several QCD--based calculations.


title:
Study of $D^{*+/-}$ Meson Production in Diffractive $ep$ Scattering at
  HERA

abstract:
  $D^{*+/-}$ production in the diffractive interactions was measured with the
ZEUS detector at HERA using integrated luminosities of 44 pb$^{-1}$ in deep
inelastic scattering and 38 pb$^{-1}$ in photoproduction processes.
  Diffractive interactions were identified by a large gap in the rapidity
distribution of final states. $D^{*+/-}$ mesons were reconstructed from the
decay $D^{*+} -> D^0\pi_s^+$ with {$D^0 -> K^-\pi^+$} (+c.c.). Integrated and
differential cross sections were compared to theoretical expectations.


title:
Centrality dependence of the expansion dynamics in Pb-Pb collisions at
  158 A GeV/c

abstract:
  Two-particle correlation functions of negatively charged hadrons from Pb-Pb
collisions at 158 GeV/c per nucleon have been measured by the WA97 experiment
at the CERN SPS. A Coulomb correction procedure that assumes an expanding
source has been implemented. Within the framework of an expanding thermalized
source model the size and dynamical state of the collision fireball at
freeze-out have been reconstructed as a function of the centrality of the
collision. Less central collisions exhibit a different dynamics than central
ones: both transverse and longitudinal expansion velocities are slower, the
expansion duration is shorter and the system freezes out showing smaller
dimensions and higher temperature.


title:
On the possibility of discrimination between $\pi^0, \eta, \omega,
  K^0_s$ mesons and a photon based on the calorimeter information in the CMS
  detector

abstract:
  The possibility of separating the $\pi^0, \eta, \omega$ and $K^0_s$ meson
background from the signal photons produced directly in $pp$ collisions is
analyzed. The rejection factors for two pseudorapidity regions 0.4<\eta<1.0$
and 1.6<\eta<2.0$ and six Et values, 20, 40, 60, 80, 100 and 200 GeV, are
calculated for a case when only the calorimeter information is used. The cases
of $\eta, \omega$ and $K^0_s$ mesons decaying through the neutral and charged
channels are considered separately.


title:
Separation of a single photon and products of the $\pi^0,\eta, K^0_s$
  meson neutral decay channels in the CMS electromagnetic calorimeter using
  neural network

abstract:
  The artificial neural network approach is used for separation of signals from
a single photon $\gamma$ and products of the $\pi^0,\eta, K^0_s$ meson neutral
decay channels on the basis of the data from the CMS electromagnetic
calorimeter alone. Rejection values for the three types of mesons as a function
of single photon selection efficiencies are obtained for two Barrel and one
Endcap pseudorapidity regions and initial $\Et$ of 20, 40, 60 and 100 GeV.


title: Open Beauty Production at HERA

abstract:
  Recent results on open beauty production in positron-proton collisions at a
centre-of-mass energy of 300 GeV are presented. The beauty photoproduction
cross section is measured by ZEUS and H1 via the semileptonic decay. Both
experiments use the transverse lepton momentum with respect to a jet as an
observable. The H1 central silicon vertex detector makes it possible to
analyse, in addition, the lepton impact parameter spectrum, thus exploiting
lifetime information for the first time at HERA. The combined lifetime and
transverse momentum signature is further used to observe beauty production for
the first time in deep inelastic scattering. All results are compared with NLO
QCD calculations.


title:
Implications for Solar Neutrino Oscillations from Super-Kamiokande and
  SNO Data

abstract:
  Super-Kamiokande uses neutrino-electron elastic scattering to measure the
recoil electron spectrum and zenith-angle dependence of solar $^8$B neutrinos.
SNO has measured the $^8$B neutrino--deuteron charged-current reaction rate.
The elastic scattering rate, spectrum and zenith-angle dependence in
conjunction with the charged-current reaction rate favors active neutrino
oscillations at large mixing angles by about 3$\sigma$ over the no-oscillation
hypothesis and small mixing angles. The analysis is independent of the absolute
$^8$B and {\it hep} flux and assumes two-flavor oscillations described by
mixing angle and mass$^2$ difference. Two allowed regions at large mixing are
found.


title:
Subjet Multiplicity of Gluon and Quark Jets Reconstructed with the
  $k_{\perp}$ Algorithm in $p\bar{p}$ Collisions

abstract:
  The D0 Collaboration has studied for the first time the properties of
hadron-collider jets reconstructed with a successive-combination algorithm
based on relative transverse momenta ($k_{\perp}$) of energy clusters. Using
the standard value D = 1.0 of the jet-separation parameter in the $k_{\perp}$
algorithm, we find that the $p_T$ of such jets is higher than the $E_T$ of
matched jets reconstructed with cones of radius R = 0.7, by about 5 (8) GeV at
$p_T \approx 90$ (240) GeV. To examine internal jet structure, the $k_{\perp}$
algorithm is applied within D = 0.5 jets to resolve any subjets. The
multiplicity of subjets in jet samples at $\sqrt{s} = 1800$ GeV and 630 GeV is
extracted separately for gluons ($M_g$) and quarks ($M_q$), and the ratio of
average subjet multiplicities in gluon and quark jets is measured as $(M_{g} -
1) / (M_{q} - 1) = 1.84 \pm 0.15 (stat.) \pm ^{0.22}_{0.18} (sys.)$. This ratio
is in agreement with the expectations from the HERWIG Monte Carlo event
generator and a resummation calculation, and with observations in $e^+e^-$
annihilations, and is close to the naive prediction for the ratio of color
charges of $C_A/C_F = 9/4 = 2.25$.


title:
Separation of quark and gluon jets in the direct photon production
  processes at the LHC using the neural network approach

abstract:
  A neural network technique is used to discriminate between quark and gluon
jets produced in the qg->q+photon and q q->g+photon processes at the LHC.
Considering the network as a trigger and using the PYTHIA event generator and
the full event fast simulation package for the CMS detector CMSJET we obtain
signal-to-background ratios.


title: A device to characterize optical fibres

abstract:
  ATLAS is a general purpose experiment approved for the LHC collider at CERN.
An important component of the detector is the central hadronic calorimeter; for
its construction more than 600,000 Wave Length Shifting (WLS) fibres
(corresponding to a total length of 1,120 Km) have been used.
  We have built and put into operation a dedicated instrument for the
measurement of light yield and attenuation length over groups of 20 fibres at a
time.
  The overall accuracy achieved in the measurement of light yield
  (attenuation length) is 1.5% (3%).
  We also report the results obtained using this method in the quality control
of a large sample of fibres.


title: First Measurement of pi e -> pi e gamma Pion Virtual Compton Scattering

abstract:
  Pion Virtual Compton Scattering (VCS) via the reaction pi e --> pi e gamma
was observed in the Fermilab E781 SELEX experiment. SELEX used a 600 GeV/c pi-
beam incident on target atomic electrons, detecting the incident pi- and the
final state pi-, electron and gamma. Theoretical predictions based on chiral
perturbation theory are incorporated into a Monte Carlo simulation of the
experiment and are compared to the data. The number of reconstructed events (9)
and their distribution with respect to the kinematic variables (for the
kinematic region studied) are in reasonable accord with the predictions. The
corresponding pi- VCS experimental cross section is sigma=38.8+-13 nb, in
agreement with the theoretical expectation sigma=34.7 nb.


title:
Measurement of the branching fractions for psi(2S)-->e+e- and
  psi(2S)-->mu+mu-

abstract:
  We measure the branching fractions of the psi(2S) meson to the leptonic final
states e+e- and mu+mu- relative to that for psi(2S)-->J/psi pi+pi-. The method
uses psi(2S) mesons produced in the decay of B mesons at the Upsilon(4S)
resonance in a data sample collected with the BABAR detector at the Stanford
Linear Accelerator Center. Using previous measurements for the psi(2S)-->J/psi
pi+pi- branching fraction, we determine the e+e- and mu+mu- branching fractions
to be 0.0078+/-0.0009+/-0.0008 and 0.0067+/-0.0008+/-0.0007 respectively.


title: Search for B Decays into K0-anti-K0

abstract:
  We present preliminary results of a search for B0-->K0-anti-K0 decays in the
K0SK0S final state using a sample of approximately 23 million B-anti-B pairs
collected by the BABAR detector at the PEP-II asymmetric B Factory at SLAC. We
find no evidence for a signal and set an upper limit on the branching fraction
of 7.3 x 10^{-6} at the 90% confidence level.


title: Search for Direct CP Violation in Quasi-Two-Body Charmless B Decays

abstract:
  We have searched for direct CP violation in quasi-two-body charmless B decays
observed in a sample of about 45 million B mesons collected with the BABAR
detector at the PEP-II collider. We measure the following charge asymmetries in
decay: ${\cal A}_{CP} (B^{\pm}\to\eta^\prime K^{\pm}) = -0.11\pm 0.11\pm 0.02$,
${\cal A}_{CP} (B^{\pm}\to\omega \pi^{\pm}) = -0.01^{+0.29}_{-0.31}\pm 0.03$,
${\cal A}_{CP} (B^{\pm}\to\phi K^{\pm}) = -0.05\pm 0.20\pm 0.03$, ${\cal
A}_{CP} (B^{\pm}\to\phi K^{*\pm}) = -0.43^{+0.36}_{-0.30}\pm 0.06$, and ${\cal
A}_{CP} (B^{0}/\bar B^{0}\to\phi K^{*0}/\bar K^{*0}) = 0.00\pm 0.27\pm 0.03$.


title: Measurement of the Branching Fraction for B^+ --> K^{*0} pi^+

abstract:
  We present a preliminary result of the branching fraction for the B meson
decay to the final state K^+pi^-pi^+ via an intermediate K^{*0} resonance using
the sample of approximately 23 million B-anti-B mesons produced at the
Upsilon(4S) resonance with the BABAR detector at the PEP II e+e- collider. The
K^{*0} was detected through the decay to the final state K^+pi^-. The result of
this analysis is BF(B^+ --> K^{*0} pi^+) = (15.5 +/- 3.4 +/- 1.8) x 10^{-6}
where the first error is statistical and the second is systematic.


title: Search for a Lifetime Difference in D^0 Decays

abstract:
  The D^0 mixing parameter y = Delta Gamma/2 Gamma was determined by measuring
the D^0 lifetime separately for the K^-pi^+ decay mode and the K^-K^+ decay
mode with 12.4 fb^{-1} of data collected by the BABAR experiment in 2001.
Backgrounds were suppressed with the D^* --> D^0pi^+ decay and particle
identification. The following preliminary result was obtained: y = (-1.0 +/-
2.2 (stat) +/- 1.7 (syst))%.


title: Study of B-->D(*)anti-D(*) decays with the BABAR detector

abstract:
  Decays of the type B-->D(*)anti-D(*) can be used to provide a measurement of
the parameter sin2beta of the Unitarity Triangle that is complementary to that
derived from the mode \bpsiks. Here we report a measurement of the branching
fraction and a study of the CP parity content for the decay B^0 -->
D^{*+}D^{*-} with the BABAR detector. With data corresponding to an integrated
luminosity of 20.7 fb^{-1} collected at the Upsilon(4S) resonance during
1999-2000, we determine the branching fraction to be
BF(B^0-->D^{*+}D^{*-})=(8.0 +/- 1.6 (stat) +/- 1.2 (syst)) x 10^{-4}. The
measured fraction of the component with odd CP parity is 0.22 +/- 0.18(stat)
+/- 0.03(syst). Observation of a significant number of candidates in the decay
modes B^0-->D^{*+}D^- and B^+ --> D^{*+}D^{*0} is reported. All results
presented in this note are preliminary.


title: Color Transparency via Coherent Exclusive rho Production

abstract:
  We examine the potential of the COMPASS experiment at CERN to study color
transparency via exclusive coherent vector meson production in hard
muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity
to test this important prediction of perturbative QCD.


title:
Search for Lepton Flavour Violation in e+e- Collisions at sqrt(s) = 189
  - 209 GeV

abstract:
  We search for lepton flavour violating events (e mu, e tau and mu tau) that
could be directly produced in e+e- annihilations, using the full available data
sample collected with the OPAL detector at centre-of-mass energies between 189
GeV and 209 GeV. In general, the Standard Model expectations describe the data
well for all the channels and at each sqrt(s). A single e mu event is observed
where according to our Monte Carlo simulations only 0.019 events are expected
from Standard Model processes. We obtain the first limits on the cross-sections
sigma(e+e- -> e mu, e tau and mu tau) as a function of sqrt(s) at LEP2
energies.


title:
Study of the heavy flavor content of jets produced in association with W
  bosons in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.8 TeV

abstract:
  We present a detailed examination of the heavy flavor content of the $W $ +
jet data sample collected with the CDF detector during the 1992-1995 collider
run at the Fermilab Tevatron. Jets containing heavy flavor quarks are selected
via the identification of secondary vertices or semileptonic decays of $b$ and
$c$ quarks. There is generally good agreement between the rates of secondary
vertices and soft leptons in the data and in the standard model simulation
including single and pair production of top quarks. An exception is the number
of events in which a single jet has both a soft lepton and a secondary vertex
tag. In $W +$ 2,3 jet data, we find 13 such events where we expected 4.4 $\pm$
0.6 events. The kinematic properties of this small sample of events are
statistically difficult to reconcile with the simulation of standard model
processes.


title:
Study and suppression of anomalous fast events in inorganic
  scintillators for dark matter searches

abstract:
  The status of dark matter searches with inorganic scintillator detectors at
Boulby mine is reviewed and the results of tests with a CsI(Tl) crystal are
presented. The objectives of the latter experiment were to study anomalous fast
events previously observed and to identify ways to remove this background.
Clear indications were found that these events were due to surface
contamination of crystals by alphas, probably from radon decay. A new array of
unencapsulated NaI(Tl) crystals immersed either in liquid paraffin or pure
nitrogen atmosphere is under construction at Boulby. Such an approach allows
complete control of the surface of the crystals and the ability to remove any
surface contamination. First data from the unencapsulated NaI(Tl) do not show
the presence of anomalous fast events.


title: Energy loss of fast quarks in nuclei

abstract:
  We report an analysis of the nuclear dependence of the yield of Drell-Yan
(DY) dimuons from the 800 GeV/c proton bombardment of $^2H$, C, Ca, Fe, and W
targets. A light-cone formulation of the DY process is employed in the rest
frame of the nucleus. In this frame, for $x_2\ll x_1$, DY production appears as
bremsstrahlung of a virtual photon followed by decay into dileptons. We treat
the two sources of nuclear suppression, energy loss and shadowing, in a
consistent formulation. Shadowing, involving no free parameters, is calculated
within the light-cone dipole formalism. Initial-state energy loss, the only
unknown in the problem, is determined from a fit to the nuclear-dependence
ratio versus $x_1$. With the assumption of constant energy loss per unit path
length, we find $-dE/dz = 2.32 \pm 0.52\pm 0.5$ GeV/fm. This is the first
observation of a nonzero energy loss of partons traveling in nuclear
environment.


title:
Active cooling control of the CLEO detector using a hydrocarbon coolant
  farm

abstract:
  We describe a novel approach to particle-detector cooling in which a modular
farm of active coolant-control platforms provides independent and regulated
heat removal from four recently upgraded subsystems of the CLEO detector: the
ring-imaging Cherenkov detector, the drift chamber, the silicon vertex
detector, and the beryllium beam pipe. We report on several aspects of the
system: the suitability of using the aliphatic-hydrocarbon solvent PF(TM)-200IG
as a heat-transfer fluid, the sensor elements and the mechanical design of the
farm platforms, a control system that is founded upon a commercial programmable
logic controller employed in industrial process-control applications, and a
diagnostic system based on virtual instrumentation. We summarize the system's
performance and point out the potential application of the design to future
high-energy physics apparatus.


title: Radiative decay width of the a2(1320)^- meson

abstract:
  Coherent pi^+pi^-pi^- production in the interactions of a beam of 600 GeV
pi^- mesons with C, Cu and Pb nuclei has been studied with the SELEX facility
(Experiment E781 at Fermilab). The a2(1320) meson signal has been detected in
the Coulomb (low q^2) region. The Primakoff formalism used to extract radiative
decay width of this meson yields Gamma=284+/-25+/-25 keV, which is the most
precise measurement to date.


title:
Hadronic Production of Lambda_c from 600 GeV/c pion, sigma and proton
  beams

abstract:
  We present data from Fermilab experiment E781 (SELEX) on the hadroproduction
asymmetry for anti-Lambda_c compared to Lambda_c+ as a function of xF and pt2
distributions for Lambda_c+. These data were measured in the same apparatus
using incident pi-, sigma- beams at 600 GeV/c and proton beam at 540 GeV/c. The
asymmetry is studied as a function of xF. In the forward hemisphere with xF >=
0.2 both baryon beams exhibit very strong preference for producing charm
baryons rather than charm antibaryons, while the pion beam asymmetry is much
smaller. In this energy regime the results show that beam fragments play a
major role in the kinematics of Lambda_c formation, as suggested by the leading
quark picture.


title: Searches for excited fermions in ep collisions at HERA

abstract:
  Searches in ep collisions for heavy excited fermions have been performed with
the ZEUS detector at HERA. Excited states of electrons and quarks have been
searched for in e^+p collisions at a centre-of-mass energy of 300 GeV using an
integrated luminosity of 47.7 pb^-1. Excited electrons have been sought via the
decays e*->egamma, e*->eZ and e*->nuW. Excited quarks have been sought via the
decays q*->qgamma and q*->qW. A search for excited neutrinos decaying via
nu*->nugamma, nu*->nuZ and nu*->eW is presented using e^-p collisions at 318
GeV centre-of-mass energy, corresponding to an integrated luminosity of 16.7
pb^-1. No evidence for any excited fermion is found, and limits on the
characteristic couplings are derived for masses below 250 GeV.


title:
Additional studies of the probability that the events with a superjet
  observed by CDF are consistent with the SM prediction

abstract:
  In the $\W+$ 2,3 jet data collected by CDF during the 1992-1995 Fermilab
collider run, 13 events were observed to contain a superjet when $4.4 \pm 0.6$
events are expected. A previous article detailed the selection and the
kinematical properties of these events. The present paper provides estimates of
the probability that the kinematics of these 13 events is statistically
consistent with the standard model prediction.


title:
Additional studies of the anomalous $l+MET+2,3$ jet events observed by
  CDF

abstract:
  We present additional studies of the kinematics of the anomalous events
observed by the CDF experiment. These events contain a high-$p_T$ lepton, large
transverse missing energy ($\MET$), and 2 or 3 high-$E_T$ jets, one of which
contains both a displaced secondary vertex and a soft lepton. Previous articles
detailed the selection and the kinematic properties of these events. In the
present paper, we use several phenomenological approaches to model these data
and to estimate their production cross section.


title:
Observation of Color-suppressed $\bar{B}^0 \to D^{0}\pi^0$,
  $D^{*0}\pi^0$, $D^0\eta$, and $D^0\omega$ Decays

abstract:
  We report the first observation of color-suppressed $\bar{B}{}^0 \to D^0
\pi^0$, $D^{*0} \pi^0$, $D^{0} \eta$, and $D^{0}\omega$ decays and evidence for
$\bar{B}{}^0 \to D^{*0} \eta$ and $D^{*0}\omega$. The branching fractions are
found to be ${\cal B} (\bar{B}{}^0 \to D^0 \pi^0) =
  (3.1 \pm 0.4 \pm 0.5) \times 10^{-4}$, ${\cal B} (\bar{B}{}^0 \to D^{*0}
\pi^0) =
  (2.7 ^{+0.8}_{-0.7} ^{+0.5}_{-0.6})\times 10^{-4}$, ${\cal B} (\bar{B}{}^0
\to D^0 \eta) =
  (1.4 ^{+0.5}_{-0.4}\pm 0.3) \times 10^{-4}$, ${\cal B} (\bar{B}{}^0 \to D^0
\omega) =
  (1.8 \pm 0.5 ^{+0.4}_{-0.3}) \times 10^{-4}$, and we set 90% confidence level
upper limits of ${\cal B} (\bar{B}{}^0 \to D^{*0} \eta) < 4.6\times 10^{-4}$
and ${\cal B} (\bar{B}{}^0 \to D^{*0} \omega) < 7.9 \times 10^{-4}$. The
analysis is based on a data sample of 21.3 fb$^{-1}$ collected at the
$\Upsilon(4S)$ resonance by the Belle detector at the KEKB $e^{+} e^{-}$
collider.


title: Search for CP Violation in the decays D+ -> K_S pi+ and D+ -> K_S K+

abstract:
  A high statistics sample of photo-produced charm from the FOCUS(E831)
experiment at Fermilab has been used to search for direct CP violation in the
decays D+->K_S pi+ and D+ -> K_S K+. We have measured the following asymmetry
parameters relative to D+->K-pi+pi+: A_CP(K_S pi+) = (-1.6 +/- 1.5 +/- 0.9)%,
A_CP(K_S K+) = (+6.9 +/- 6.0 +/- 1.5)% and A_CP(K_S K+) = (+7.1 +/- 6.1 +/-
1.2)% relative to D+->K_S pi+. The first errors quoted are statistical and the
second are systematic. We also measure the relative branching ratios:
\Gamma(D+->\bar{K0}pi+)/\Gamma(D+->K-pi+pi+) = (30.60 +/- 0.46 +/- 0.32)%,
\Gamma(D+->\bar{K0}K+)/\Gamma(D+->K-pi+pi+) = (6.04 +/- 0.35 +/- 0.30)% and
\Gamma(D+->\bar{K0}K+)/\Gamma(D+->\bar{K0}pi+) = (19.96 +/- 1.19 +/- 0.96)%.


title: Experimental Status of Leptonic Ds Decays

abstract:
  The measurements of the leptonic branching ratios BR(Ds->tau nu) and
BR(Ds->mu nu) are reviewed. The values of the Ds decay constant fDs derived
from the measurements are updated and a world average is calculated taking into
account the large correlations between the measurements


title: CDF results on diffraction from Run I and plans for Run II

abstract:
  Results on soft and hard diffraction obtained by the CDF Collaboration in Run
I of the Fermilab Tevatron pbar-p collider are reviewed and compared with
results from the DESY e-p collider HERA and with theoretical expectations. In
addition, the CDF program for diffractive studies in Run II is briefly reviewed
with emphasis on the relevant detector upgrades and physics goals.


title:
Diffractive Dijet Production at sqrt(s)=630 and 1800 GeV at the Fermilab
  Tevatron

abstract:
  We report a measurement of the diffractive structure function $F_{jj}^D$ of
the antiproton obtained from a study of dijet events produced in association
with a leading antiproton in $\bar pp$ collisions at $\sqrt s=630$ GeV at the
Fermilab Tevatron. The ratio of $F_{jj}^D$ at $\sqrt s=630$ GeV to $F_{jj}^D$
obtained from a similar measurement at $\sqrt s=1800$ GeV is compared with
expectations from QCD factorization and with theoretical predictions. We also
report a measurement of the $\xi$ ($x$-Pomeron) and $\beta$ ($x$ of parton in
Pomeron) dependence of $F_{jj}^D$ at $\sqrt s=1800$ GeV. In the region
$0.035<\xi<0.095$, $|t|<1$ GeV$^2$ and $\beta<0.5$, $F_{jj}^D(\beta,\xi)$ is
found to be of the form $\beta^{-1.0\pm 0.1} \xi^{-0.9\pm 0.1}$, which obeys
$\beta$-$\xi$ factorization.


title: Observation of the Decay $B \to K \ell^{+} \ell^{-}$

abstract:
  We report a search for the flavor-changing neutral current decay $B \to
K^{(*)} \ell^{+} \ell^{-}$ using a 29.1 fb${}^{-1}$ data sample accumulated at
the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^{+}e^{-}$
storage ring. We observe the decay process $B\to K\ell^+\ell^- (\ell = e, \mu
)$, for the first time, with a branching fraction of ${\cal B}(B \to K \ell^{+}
\ell^{-}) = (0.75^{+0.25}_{-0.21} \pm 0.09) \times 10^{-6}$.


title:
Nuclear transparency from quasielastic A(e,e'p) reactions uo to Q^2=8.1
  (GeV/c)^2

abstract:
  The quasielastic (e,e$^\prime$p) reaction was studied on targets of
deuterium, carbon, and iron up to a value of momentum transfer $Q^2$ of 8.1
(GeV/c)$^2$. A nuclear transparency was determined by comparing the data to
calculations in the Plane-Wave Impulse Approximation. The dependence of the
nuclear transparency on $Q^2$ and the mass number $A$ was investigated in a
search for the onset of the Color Transparency phenomenon. We find no evidence
for the onset of Color Transparency within our range of $Q^2$. A fit to the
world's nuclear transparency data reflects the energy dependence of the free
proton-nucleon cross section.


title:
Reconstruction of Vees, Kinks, $\Xi^-$'s, and $\Omega^-$'s in the Focus
  Spectrometer

abstract:
  We describe the various techniques developed in the Fermilab Wideband
Experiments, E687 and FOCUS, to reconstruct long-lived states. The techniques
all involve modifications to standard tracking techniques and are useful to
report for future experiments.


title: Dijet production in neutral current deep inelastic scattering at HERA

abstract:
  Dijet cross sections in neutral current deep inelastic ep scattering have
been measured in the range $10 < \Q2 < 10^4$ GeV$^2$ with the ZEUS detector at
HERA using an integrated luminosity of 38.4 pb$^{-1}$. The cross sections,
measured in the Breit frame using the $\kt$ jet algorithm, are compared with
next-to-leading-order perturbative QCD calculations using proton parton
distribution functions. The uncertainties of the QCD calculations have been
studied. The predictions are in reasonable agreement with the measured cross
sections over the entire kinematic range.


title: Open Charm Production at HERA

abstract:
  Measurements of charmed particle cross sections at HERA in the
photoproduction and deep inelastic regimes are reviewed. The status of the
comparison with perturbative QCD calculations is discussed.


title: Measurements of extremely low radioactivity levels in BOREXINO

abstract:
  The techniques researched, developed and applied towards the measurement of
radioisotope concentrations at ultra-low levels in the real-time solar neutrino
experiment BOREXINO at Gran Sasso are presented and illustrated with specific
results of widespread interest. We report the use of low-level germanium gamma
spectrometry, low-level miniaturized gas proportional counters and low
background scintillation detectors developed in solar neutrino research. Each
now sets records in its field. We additionally describe our techniques of
radiochemical ultra-pure, few atom manipulations and extractions. Forefront
measurements also result from the powerful combination of neutron activation
and low-level counting. Finally, with our techniques and commercially available
mass spectrometry and atomic absorption spectroscopy, new low-level detection
limits for isotopes of interest are obtained.


title:
Review of the Technical Issues Associated with the Construction of a
  Solar Neutrino TPC

abstract:
  In this note the issues surrounding the realization of a solar neutrino TPC
are reviewed. The technical challenges can be summarized as building a very
large TPC within the low background constraints of solar neutrino
experimentation.


title:
KATRIN: A next generation tritium beta decay experiment with sub-eV
  sensitivity for the electron neutrino mass

abstract:
  With the compelling evidence for massive neutrinos from recent
neutrino-oscillation experiments, one of the most fundamental tasks of particle
physics over the next years will be the determination of the absolute mass
scale of neutrinos. The absolute value of neutrino-masses will have crucial
implications for cosmology, astrophysics and particle physics. We present the
case for a next generation tritium beta decay experiment to perform a high
precision direct measurement of the absolute mass of the electron neutrino with
sub-eV sensitivity. We discuss the experimental requirements and technical
challenges of the proposed Karlsruhe Tritium Neutrino experiment (KATRIN) and
outline its physics potential.


title: Study of semi-inclusive production of eta' mesons in B decays

abstract:
  We report a measurement of the rate for $B \to \eta' X_s$ transitions where
the $\eta'$ meson has center-of-mass momentum in the range 2.0 to 2.7\gevc and
$X_s$ represents a system comprising a kaon and up to four pions. Our study is
based on 22.2 million $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ with the
BABAR detector at the Stanford Linear Accelerator Center. We find
$\mathcal{B}(B \to \eta'
X_s)=(6.8^{+0.7}_{-1.7}(stat)\pm1.0(syst)^{+0.0}_{-0.5}(bkg))\times10^{-4}$
assuming that the signal is due to $b \to sg^*$ transitions.


title: Review of experimental results from SND detector

abstract:
  The review of experimental results obtained with SND detector at VEPP-2M
$e^+e^-$ collider in the energy region $\sqrt[]{s}=0.36$ -- 1.38 GeV is given.
The presented results include the following items: studies of the light vector
mesons radiative decays, OZI-rule and G-parity suppressed $\phi$-meson rare
decays, $\phi$-meson parameters measurements, studies of
$e^+e^-\to\pi^+\pi^-\pi^0$ process dynamics, $\eta$ and $K_S$ mesons rare
decays, $\eta$ and $\phi$ mesons conversion decays, and study of the $e^+e^-$
annihilation into hadrons.


title:
Bose-Einstein Correlations of Neutral and Charged Pions in Hadronic Z
  Decays

abstract:
  Bose-Einstein correlations of both neutral and like-sign charged pion pairs
are measured in a sample of 2 million hadronic Z decays collected with the L3
detector at LEP. The analysis is performed in the four-momentum difference
range 300 MeV < Q < 2 GeV. The radius of the neutral pion source is found to be
smaller than that of charged pions. This result is in qualitative agreement
with the string fragmentation model.


title: Inclusive pi0 and K0s Production in Two-Photon Collisions at LEP

abstract:
  The reactions ee->ee+pi0+X and ee->ee+K0s+X are studied using data collected
at LEP with the L3 detector at centre-of-mass energies between 189 and 202 GeV.
Inclusive differential cross sections are measured as a function of the
particle transverse momentum pt and the pseudo-rapidity. For pt < 1.5 GeV, the
pi0 and K0s differential cross sections are described by an exponential,
typical of soft hadronic processes. For pt > 1.5 GeV, the cross sections show
the presence of perturbative QCD processes, described by a power-law. The data
are compared to Monte Carlo predictions and to NLO QCD calculations.


title: Open Beauty Production

abstract:
  We review measurements of open beauty production at HERA, with emphasis on
recent results based on lifetime signatures. The beauty cross sections in
photoproduction and deep-inelastic scattering are found to be higher than
expected in QCD at next-to-leading order. The discussion includes new results
on beauty production in e+e-, gamma-gamma and p-bar-p interactions. An outlook
on the potential for measurements with the upgraded HERA collider and
experiments is also given.


title: Jets in deep-inelastic scattering at HERA

abstract:
  Jet cross sections in deep-inelastic scattering over a wide region of phase
space have been measured at HERA. These cross section measurements provide a
thorough test of the implementation of Quantum Chromodynamics in
next-to-leading order (NLO) calculations. They also provide the opportunity to
test the consistency of the gluon distribution in the proton as extracted from
(mainly) inclusive DIS measurements. Comparison of the cross sections with NLO
enables accurate extractions of the strong coupling constant, $\alpha_s$, to be
made, several of which are reported here.


title: Radiative Decay of the \psi(2S) into Two Pseudoscalar Mesons

abstract:
  Radiative decays of the radially excited charmonium resonance, \psi(2S), into
\pi\pi, K Kbar and \eta\eta final states have been measured in a sample of 3.96
* 10^6 \psi(2S) events collected by the BES collaboration. The branching ratios
B(\psi(2S) -> \gamma f_{2}(1270)) = (2.27 +- 0.26 +- 0.39) * 10^{-4} and
B(\psi(2S) -> \gamma f_0(1710)) * B(f_0(1710) -> K^+ K^-) = (5.59 +- 1.12 +-
0.93) * 10^{-5} are obtained. When compared to the corresponding radiative
J/\psi decays, the observed \psi(2S) radiative decay rates into \gamma
f_2(1270) and \gamma f_0(1710) are consistent with the 15% rule.


title:
The Inclusive Jet Cross Section in ppbar Collisions at sqrt{s}=1.8 TeV
  using the kT Algorithm

abstract:
  The central inclusive jet cross section has been measured using a
successive-combination algorithm for reconstruction of jets. The measurement
uses 87.3 pb^{-1} of data collected with the D0 detector at the Fermilab
Tevatron ppbar Collider during 1994-1995. The cross section, reported as a
function of transverse momentum (pT>60 GeV) in the central region of
pseudorapidity (|\eta|<0.5), exhibits reasonable agreement with next-to-leading
order QCD predictions, except at low pT where the agreement is marginal.


title:
Determination of the strangeness content of light-flavour isoscalars
  from their production rates in hadronic Z decays at LEP

abstract:
  A new phenomenological approach is suggested for determining the strangeness
content of light-flavour isoscalars. This approach is based on phenomenological
laws of hadron production related to the spin, isospin, strangeness content and
mass of the particles. From the total production rates per hadronic Z decay of
all light-flavour hadrons, measured so far at LEP, the values of the
nonstrange-strange mixing angles are found to be |\phi_P| = 42.3^{\circ} \pm
3.5^{\circ}, |\phi_V| = 10^{\circ} \pm 8^{\circ}, |\phi_T| = 16^{\circ} \pm
11^{\circ} and |\phi_S| = 13^{\circ} \pm 9^{\circ}. Our results on the
\eta-\eta^{\prime}, \omega-\phi and f_2-f_2^{\prime} isoscalar mixing are
consistent with the present experimental evidence. The strangeness content
obtained for the f_0(980) scalar/isoscalar is not consistent with the values
supported by recent model studies and is discussed further in the framework of
our approach and the K-matrix analysis.


title: Study of Charmonium Production and Electroweak Penguins with BABAR

abstract:
  We report measurements of charmonium resonances (J/Psi, Psi(2S),Chi_c1) using
about 25 fb^-1 of data collected by the BABAR detector around the Upsilon(4S)
resonance. We present measurements of inclusive charmonium production of
charmonium in B decays and from the continuum, as well as exclusive branching
ratios of B mesons into charmonium final states. We present also a measurement
of the B0 -> K*0 gamma branching ratio and a search for the decay B0 -> gamma
gamma.


title: Neutrino Spectrum at the Far Detector

abstract:
  Neutrino oscillation experiments often employ two identical detectors to
minimize errors due to inadequately known neutrino beam. We examine various
systematics effects related to the prediction of the neutrino spectrum in the
`far' detector on the basis of the spectrum observed at the `near' detector. We
propose a novel method of the derivation of the far detector spectrum. This
method is less sensitive to the details of the understanding of the neutrino
beam line and the hadron production spectra than the usually used `double
ratio' method thus allowing to reduce the systematic errors.


title: A New Measurement of the Cascade(c)+ Lifetime

abstract:
  A precise determination of the charm-strange baryon Cascade(c)+ lifetime is
presented. The data were accumulated by the Fermilab high-energy
photoproduction experiment FOCUS. The measurement is made with 300 Cascade(c)+
--> Cascade- pi+ pi+ decays, 130 Cascade(c)+ --> Sigma+ K- pi+ decays, 45
Cascade(c)+ --> p K- pi+ decays and 58 Cascade(c)+ --> Lambda K- pi+ pi+
decays. The Cascade(c)+ lifetime is measured to be 0.439+/-0.022+/-0.009 ps.


title: W Boson Properties

abstract:
  Studying the properties of the W boson naturally plays a key role in
precision tests of the Standard Model. In this paper, the key measurements
performed at LEP and the Tevatron over the last decade are reviewed. The
current world knowledge of the W boson production and decay properties, gauge
couplings, and mass are presented, with an emphasis on the most recent results
from LEP2. Some estimates of the sensitivity of the upcoming Tevatron RunII are
also presented.


title: Precision tests of the Electroweak interactions at e+e- collisions

abstract:
  This paper is an updated version of the lectures given at the XXIX
International Meeting on Fundamental Physics in Sitges, Barcelona (February
2000). The measurements perforned at LEP and SLC have substantially improved
the precision of the test of the Minimal Standard Model. The precision is such
that there is sensitivity to pure weak radiative corrections. This allows to
indirectly determine the top mass (m_t = 180 +- 10GeV), the W-boson mass (M_W =
80.375 +- 0.022GeV), and to set an upper limit on the Higgs boson mass of
196GeV at 95% confidence level.


title:
Multi-Megaton Water Cherenkov Detector for a Proton Decay Search --
  TITAND

abstract:
  In this report, we will show a detector which can be used to search for
proton decay in the lifetime region beyond 10$^{35}$ years.
  We will briefly review the current experimental status and discuss the
sensitivity of the future proton decay detectors, and we specifically present a
possibility of a scalable multi-megaton water Cherenkov detector immersed in
the shallow water.


title:
Measurement of the Hadronic Cross-Section for the Scattering of Two
  Virtual Photons at LEP

abstract:
  The interaction of virtual photons is investigated using the reaction e+e- ->
e+e- hadrons based on data taken by the OPAL experiment at e+e- centre-of-mass
energies sqrt(s_ee)=189-209 GeV, for W>5 GeV and at an average Q^2 of 17.9
GeV^2. The measured cross-sections are compared to predictions of the Quark
Parton Model (QPM), to the Leading Order QCD Monte Carlo model PHOJET to the
NLO prediction for the reaction e+e- -> e+e-qqbar, and to BFKL calculations.
PHOJET, NLO e+e- -> e+e-qqbar, and QPM describe the data reasonably well,
whereas the cross-section predicted by a Leading Order BFKL calculation is too
large.


title:
$Q^2$ Dependence of Quadrupole Strength in the
  $\gamma^*p\to\Delta^+(1232)\to p \pi^0$ Transition

abstract:
  Models of baryon structure predict a small quadrupole deformation of the
nucleon due to residual tensor forces between quarks or distortions from the
pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through
the $Q^2$ dependence of the magnetic ($M_{1+}$), electric ($E_{1+}$), and
scalar ($S_{1+}$) multipoles in the $\gamma^* p \to \Delta^+ \to p \pi^0$
transition. We report new experimental values for the ratios $E_{1+}/M_{1+}$
and $S_{1+}/M_{1+}$ over the range $Q^2$= 0.4-1.8 GeV$^2$, extracted from
precision $p(e,e 'p)\pi^{\circ}$ data using a truncated multipole expansion.
Results are best described by recent unitary models in which the pion cloud
plays a dominant role.


title:
Construction and Performance of a Micro-Pattern Stereo Detector with Two
  Gas Electron Multipliers

abstract:
  The construction of a micro-pattern gas detector of dimensions 40x10 cm**2 is
described. Two gas electron multiplier foils (GEM) provide the internal
amplification stages. A two-layer readout structure was used, manufactured in
the same technology as the GEM foils. The strips of each layer cross at an
effective crossing angle of 6.7 degrees and have a 406 um pitch. The
performance of the detector has been evaluated in a muon beam at CERN using a
silicon telescope as reference system. The position resolutions of two
orthogonal coordinates are measured to be 50 um and 1 mm, respectively. The
muon detection efficiency for two-dimensional space points reaches 96%.


title: Search for Single Top Quark Production at LEP2

abstract:
  A search for single top quark production via flavour changing neutral
currents (FCNC) was performed with data collected by the OPAL detector at the
e+e- collider LEP. Approximately 600 pb-1 of data collected at sqrt(s) = 189 -
209 GeV were used to search for the FCNC process e+ e- -> tc(u) -> bWc(u). This
analysis is sensitive to the leptonic and the hadronic decay modes of the W
boson. No evidence for a FCNC process is observed. Upper limits at the 95%
confidence level on the single top production cross-section as a function of
the centre-of-mass energy are derived. Limits on the anomalous coupling
parameters kappa_gamma and kappa_Z are determined from these results.


title: Study of rare and hadronic B decays in BABAR

abstract:
  We present results from BABAR experiment for the measurement of inclusive and
exclusive branching fractions of B mesons into final states containing
$J/\psi$, $\psi(2S)$ and $\chi_c$. The contributions of CP even and odd
amplitudes in the decay $B^0 \to J/\psi K^{*0}$ are determined from an angular
analysis. We report the measurements of the branching ratios $B^0 \to
D^{*+}D^{*-}$ and $D^{*+}D^{*-}K^0_S$, and the study of exclusive two-body and
quasi-two-body charmless decays. The branching fraction of the decay $B^0 \to
K^{*0} \gamma$ has been determined and the corresponding CP asymmetry has been
measured.


title:
Production Asymmetry Measurement of High Xt Hadrons in pp Collisions at
  40 GeV

abstract:
  Single-spin asymmetries for hadrons have been measured in collisions of
transversely-polarized 40 GeV/c proton beam with an unpolarized liquid hydrogen
target. The asymmetries were measured for pi+-, K+-, protons and antiprotons,
produced in the central region (0.02 < Xf < 0.10 and 0.7 < Pt < 3.4 GeV/c).
Asymmetries for pi+-, K+- and antiprotons show within measurement errors the
linear dependence on Xt and change a sign near 0.37. For protons negative
asymmetry, independent of Xt has been found. The results are compared with
those of other experiments and SU(6) model predictions.


title:
Production of Prompt Charmonia in $e^+e^-$ Annihilation at
  $\sqrt{s}\approx 10.6$ GeV

abstract:
  The production of prompt $J/\psi$, $\psi(2S)$, $\chi_{c1}$ and $\chi_{c2}$ is
studied using a $32.4 fb^{-1}$ data sample collected with the Belle detector at
the $\Upsilon(4S)$ and 60 MeV below the resonance. The yield of prompt $J/\psi$
mesons in the $\Upsilon(4S)$ sample is compatible with that of continuum
production; we set an upper limit ${\cal B}(\Upsilon(4S) \to J/\psi X) < 1.9
\times 10^{-4}$ at the 95% confidence level, and find $\sigma(e^{+}e^{-} \to
J/\psi X)=1.47\pm 0.10 \pm 0.13$ pb. The cross-sections for prompt $\psi(2S)$
and direct $J/\psi$ are measured. The $J/\psi$ momentum spectrum, production
angle distribution and polarization are studied.


title: Search for radiative decays of solar neutrinos during a solar eclipse

abstract:
  A search for possible radiative decays of solar neutrinos with emission of
photons in the visible range may be performed during total solar eclipses. We
discuss some results obtained from the digitized images recorded during the
August 11, 1999 total solar eclipse in Romania, and report on the observations
made in June 21, 2001, in Zambia. Added reference for Section 1.


title: Hadronic B decays to open charm at the BaBar Experiment

abstract:
  Using about 23M $B \bar B$ events collected in 1999-2000 with the BABAR
detector, we report on the decays $B \to D^{(*)}\bar D^{(*)}K$ and $B^0 \to
D^{*+}D^{*-}$. The branching fractions of the low background decay modes $B \to
D^{(*)}\bar D^{(*)}K$ are determined to be ${\cal B}(B^0 \to D^{*-}D^{0}K^+) =
(2.8 \pm 0.7 \pm 0.5)\times 10^{-3}$ and ${\cal B}(B^0 \to D^{*-}D^{*0}K^+) =
(6.8 \pm 1.7 \pm 1.7)\times 10^{-3}$, where the first error quoted is
statistical and the second systematic. Observation of a significant number of
candidates in the color-suppressed decay mode $B^+\to D^{*+}D^{*-}K^+$ is
reported with a branching fraction ${\cal B}(B^+\to D^{*+}D^{*-}K^+)= (3.4\pm
1.6\pm 0.9)\times 10^{-3}$. Decays of the type $B \to D^{(*)} \bar D^{(*)}$ can
be used to provide a measurement of the parameter $\sin 2 \beta$ of the
Unitarity Triangle. For this decay mode we measure a branching fraction of
${\cal BR} (B^0 \to D^{*+}D^{*-}) = (8.0 \pm 1.6\pm 1.2)\times 10^{-4}$. All
results presented here are preliminary.


title:
Search for New Physics in Photon-Lepton Events in Proton-Antiproton
  Collisions at sqrt(s) = 1.8 TeV

abstract:
  We present the results of a search in proton-antiproton collisions at sqrt(s)
= 1.8 TeV for anomalous production of events containing a photon with large
transverse energy and a lepton (e or mu) with large transverse energy, using 86
pb^{-1} of data collected with the Collider Detector at Fermilab during the
1994-95 collider run at the Fermilab Tevatron. The presence of large missing
transverse energy, additional photons, or additional leptons in these events is
also analyzed. The results are consistent with standard model expectations,
with the possible exception of photon-lepton events with large missing
transverse energy, for which the observed total is 16 events and the expected
mean total is 7.6+/-0.7 events.


title:
Radiative Decay Width Measurements of Neutral Kaon Excitations Using the
  Primakoff Effect

abstract:
  We produce a sample consisting of 147 candidate events, with minimal
backgrounds, of the mixed axial vector pair K1(1270)-K1(1400) by exciting Kl's
in the Coulomb field of lead and report the first measurements of the radiative
widths Gamma_r(K1(1400)) = 280.8+-23.2(stat)+-40.4(syst) keV and
Gamma_r(K1(1270)) = 73.2+- 6.1(stat)+-28.3(syst) keV. We also place 90% CL
upper limits Gamma_r(K*(1410)) < 52.9 keV for the vector state and
Gamma_r(K2*(1430)) < 5.4 keV for the tensor state. These measurements allow for
significant tests of quark-model predictions of radiative widths for the
low-lying vector mesons.


title:
Simultaneously non-linear energy calibration of CMS calorimeters for
  single pions and electrons

abstract:
  CMS calorimeter energy calibration was done in the full CMS simulated
geometry for the pseudorapidity region eta = 0. The samples of single pion
events were generated with a set of incident energies from 5 GeV to 3 TeV and
for single electrons from 5 to 500 GeV. The analysis of the simulated data
shows that standard calibration using just sampling coefficients for
calorimeter parts with different sampling ratio gives nonlinear calorimeter
response. Non-linear calibration technique was applied simultaneously for pion
and electron beams which is preparation for jets energy reconstruction. It
improve calorimeter energy resolution for pions and restore the calorimeter
linearity.


title: Optimization of crystal extraction experiment

abstract:
  Using a computer model for the crystal extraction, we investigate the
bent-crystal parameters optimal for the extraction experiment. The optimal
crystal curvature is found to be near 1 GeV/cm (for pv/R), i.e. a factor of
2--3 higher than for the crystal application in beam lines. An influence of the
accelerator optics on extraction is discussed. A possibility of using the
high-Z crystals for extraction is considered. The simulations for the ongoing
experiments at the CERN-SPS and the Fermilab Tevatron, and for the proposed
extraction at LHC, are presented.


title:
A precise measurement of the direct CP violation parameter
  Re(epsilon'/epsilon)

abstract:
  The direct CP violation parameter Re(epsilon'/epsilon) has been measured from
the decay rates of neutral kaons into two pions using the NA48 detector at the
CERN SPS. With 3.3 million KL->pi0pi0 events collected during the 1998 and 1999
running periods, a result of Re(epsilon'/epsilon) = (15.0 +- 2.7)x10-4 has been
obtained. The result combined with the published 1997 sample is
Re(epsilon'/epsilon) = (15.3 +- 2.6)x10-4.


title: Recent KTEV Results

abstract:
  Preliminary KTEV results are presented based on the 1997 data set, and
include an improved measurement of Re(e'/e), CPT tests, and precise
measurements of Tau_S and Delta M.


title: Atmospheric neutrino oscillations in MACRO

abstract:
  In this paper we first give a short overview of the MACRO detector, which was
operational at the Gran Sasso Laboratory from 1989 till 2000. Then we present
and discuss the results on atmospheric neutrino oscillations, concerning medium
(~4 GeV) and high (~50 GeV) energy data. Using the Multiple Coulomb Scattering
of muons inside the lower part of the detector, estimates of neutrino energies
were made for the high energy sample. The MACRO data, angular distributions,
absolute flux and L/E_nu distributions favour nu_mu <--> nu_tau oscillations
with maximal mixing and Dm^2=2.5 x 10^-3 eV^2.


title: A search for GMSB sleptons with lifetime at ALEPH

abstract:
  A search for slepton production via the decay of pair-produced neutralinos
has been performed under the assumption that the sleptons have observable
lifetime in the detector before each decays to a lepton and a gravitino.
Sleptons, neutralinos and gravitinos are particles predicted by the theory of
supersymmetry, and are the supersymmetric partners of the Standard Model
leptons, neutral bosons and of the graviton respectively. The search was
performed in 628 inverse picobarns of data taken by the ALEPH detector at LEP
centre-of-mass energies from 189 to 208 GeV. It was motivated by general
predictions of Gauge-Mediated Supersymmetry Breaking (GMSB) models in which the
lightest supersymmetric particle is always the gravitino. No evidence of the
process was found. Model-independent cross-section limits are quoted as a
function of neutralino mass, slepton mass and slepton lifetime in the case that
the neutralino branching ratios to each slepton are equal at one third (the
so-called slepton co-NLSP scenario, where NLSP stands for `Next-to-Lightest
Supersymmetric Particle') and in the case that the neutralino decays
exclusively to the stau (the stau-NLSP scenario). Excluded regions in the
neutralino-stau mass plane are shown for four gravitino masses under
model-specific assumptions.


title: Production of J/psi Mesons at HERA

abstract:
  Inelastic and diffractive production of J/psi mesons at HERA is reviewed. The
data on inelastic photoproduction are described well within errors by the
Colour Singlet Model in next-to-leading order. A search for colour octet
processes predicted within the NRQCD/factorisation approach is conducted in
many regions of phase space. No unambiguous evidence has been found to date.
Diffractive elastic production of J/psi mesons has been measured in the limit
of photoproduction up to the highest photon proton center of mass energies. The
increase of the cross section is described by pQCD models. At larger Q^2, the W
dependence is found to be similar to that observed in photoproduction. First
analyses of data at high t yield a powerlike dependence on |t|. A LO BFKL
calculation gives a good description of the data.


title: Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2

abstract:
  The hadronic structure function of the photon F_2^gamma is measured as a
function of Bjorken x and of the factorisation scale Q^2 using data taken by
the OPAL detector at LEP. Previous OPAL measurements of the x dependence of
F_2^gamma are extended to an average Q^2 of 767 GeV^2. The Q^2 evolution of
F_2^gamma is studied for average Q^2 between 11.9 and 1051 GeV^2. As predicted
by QCD, the data show positive scaling violations in F_2^gamma. Several
parameterisations of F_2^gamma are in agreement with the measurements whereas
the quark-parton model prediction fails to describe the data.


title: The theory of the scattering-induced feeding-in in bent crystals

abstract:
  An analytical theory for the efficiency of scattering-induced transitions
from a random to a channeled state (feed-in) in bent crystals is derived. The
predictions from the theory are in good agreement with experiment and Monte
Carlo simulations.


title: Spectroscopy of Low Energy Neutrinos from the Sun

abstract:
  Two methods are discussed for the solar neutrino spectroscopy in the sub-MeV
region: absorption in a loaded liquid scintillator and elastic scattering in a
TPC. The different neutrino oscillation solutions predict a strong effect in
this energy region where the largest fraction (\sim 98%) of solar neutrinos
lies. Both projects have reached the stage where they have to prove their
capability to attain a background low enough for solar neutrino detection.


title: Young Physicists' Forum

abstract:
  The Young Physicists' Forum was an opportunity for the younger members of the
particle-physics community to gather at Snowmass 2001 and to study and debate
major issues that face the field over the next twenty years. Discussions were
organized around three major topics: outreach and education, the impact of
globalization, and building a robust and balanced field. We report on the
results of these discussions, as presented on July 17, 2001.


title: Results on CP Violation from the NA48 experiment at CERN

abstract:
  In this article the current status and latest results of the NA48 experiment
at CERN are given. We present in more details the analysis performed for the
Re(e'/e) measurement with the combined statistics accumulated during the 1998
and 1999 data periods. Reviewing the NA48 rare decay program, we select to
underline the new results on the branching ratio and the A_v factor for the
decay KL->pi0gg and the KL->pi+pi-e+e- CP violating decay. This article is the
contribution to the Proceedings of the Lepton-Photon Conference held in Roma,
July 23-29 2001.


title: Correlations in the Charged-Particle Multiplicity Distribution

abstract:
  In this thesis, we perform an analysis on e+e- hadronic Z decays recorded in
1994 and 1995 by the L3 detector of LEP at center-of-mass energy corresponding
to the Z mass. The analysis is performed in parallel for all hadronic events
and for selected b-quark and light-quark events.
  The distribution of two variables, the charged-particle multiplicity and the
inclusive charged-particle momentum are measured, from which all the analysis
is carried out.
  From the measurement of the charged-particle multiplicity distribution, it is
possible to extract information concerning the dynamics of the interaction.
Using moments, one can obtain informations on particle correlation. We measure
the Hq moments of the charged-particle multiplicity distribution which give the
relative amount of genuine q-particle correlation order q. An oscillatory
pattern is observed when the H_q moments are plotted versus the order q.
Comparisons with different theoretical approaches are discussed.


title: Search for eta_b in Two-Photon Events

abstract:
  A search for the pseudoscalar meson eta_b was performed at LEP~II energies
with an integrated luminosity of 700pb^-1. The search, done for the decay modes
into 4 and 6 charged particles yielded 0 and 1 candidates, respectively. Upper
limits on Gamma_gammagamma(eta_b)*BR for both modes of 57eV and 128eV were
obtained with corresponding limits of 17% and 38% on branching ratios BR(eta_b)
-> 4 charged particles and BR(eta_b) -> 6 charged particles at a confidence
level of 95%. The candidate has a mass of 9.30 +- 0.04GeV.


title: Search for CP Violation and New Physics at CLEO

abstract:
  Recent CLEO results on the search for CP violation in decays of B and D
mesons and tau lepton are reviewed. New data on ``wrong-sign'' D decays and B
to K(*)l+l-$ FCNC transitions are presented. As possible Standard Model
contribution to many of studied processes is tiny, described efforts constitute
the search for physics beyond the Standard Model. Future CLEO-c efforts on the
subject are also outlined.


title: Neutrino Oscillations Experiments using Off-axis NuMI Beam

abstract:
  NuMI neutrino beam is constructed to aim at the MINOS detector in Soudan
mine. Neutrinos emitted at angles $10-20 mrad$ with respect to the beam axis
create an intense beam with a well defined energy, dependent on the angle.
Additional surface detectors positioned at the transverse distance of several
kilometers from the mine offer an opportunity for very precise mesurements of
the neutrino oscillation parameters. The mixing matrix element $|U_{e3}|^{2}$
can be measured down to a value of 0.0025 with the exposure of the order of $20
kton\times years$.


title:
Observation of the Decay K- -> pi- mu+ mu- and Measurements of the
  Branching Ratios for K+/- -> pi+/- mu+ mu-

abstract:
  Using data collected with the HyperCP (E871) spectrometer during the 1997
fixed-target run at Fermilab, we report the first observation of the decay K-
-> pi- mu+ mu- and new measurements of the branching ratios for K+/- -> pi+/-
mu+ mu- . By combining the branching ratios for the K+ and K- decays, we
measure the ratio (K+/- -> pi+/- mu+ mu-)/(K+/- -> all) = (9.8 +/- 1.0 +/-
0.5)x10^(-8). The CP asymmetry between the K+ and K- decay modes = -0.02 +/-
0.11 +/- 0.04.


title: Results from the K2K Long--Baseline Neutrino Oscillation Experiment

abstract:
  The K2K Long--Baseline neutrino oscillation experiment has been aquiring data
since mid-1999 and has analysed those up to March of 2001. Forty-four fully
contained events are observedin the fiducial volume of the far detector where
$64^{+6.1}_{-6.6}$ are expected based partly on measurements near the beam
production point. There is virtually no background for the contained event
search. The methods established in this experiment are crucial for operation of
future similar experiments to probe the nature of mixing in the neutral lepton
sector, a necessary step in understanding the nature of family structure and of
mass itself. A brief history and a few notes about the future and direction of
the field precede the description of the experiment and its results.


title:
Search for periodicities in experimental data using an autoregression
  data model

abstract:
  To process data obtained during interference experiments in high-energy
physics, methods of spectral analysis are employed. Methods of spectral
analysis, in which an autoregression model of experimental data is used, such
as the maximum entropy technique as well as Pisarenko and Prony's method, are
described. To show the potentials of the methods, experimental and simulated
hummed data are discussed as an example.


title: Heavy Quark Production in Deep-Inelastic Scattering

abstract:
  We review recent results from the H1 and ZEUS experiments at HERA on charm
and beauty production in ep collisions at 300 - 318 GeV centre-of-mass energy.


title: Search for Excited Neutrinos at HERA

abstract:
  We present a search for excited neutrinos using e^-p data taken by the H1
experiment at HERA at a center-of-mass energy of 318 GeV with an integrated
luminosity of 15 pb-1. No evidence for excited neutrino production is found.
Mass dependent exclusion limits are determined for the ratio of the coupling to
the compositeness scale, f/Lambda, independently of the relative couplings to
the SU(2) and U(1) gauge bosons. These limits extend the excluded region to
higher masses than has been possible in previous searches at other colliders.


title: The theory of the centrifugal mechanism of feeding-in in bent crystals

abstract:
  For a particle channeled in the bent crystal planes (axes), the phenomenon of
"bending dechanneling", which is a particle transition to a random state due to
centrifugal force, is well known. We consider an analytical theory of the
reverse phenomenon, i.e., feeding from a random state to a channeled state due
to centrifugal force in a crystal with variable curvature.


title:
Vertex Detection for a Charm Tag in e+e- -> W+W- at a High Energy
  Electron-Positron Linear Collider

abstract:
  The study of the process $e^+e^- \to W^+W^-$ at Linear Collider energies
presents a good opportunity to investigate anomalous triple gauge boson
couplings and $W^+_LW^-_L$ rescattering. The helicity analysis of the $e^+e^-
\to W^+_LW^-_L$ decays will benefit if the charm quark containing jet can be
identified for events which contain one hadronic $W$ boson decay to a charm and
another quark. A JAVA implementation of the SLD collaboration's topological
vertex finding algorithm (ZVTOP) in the linear collider analysis framework has
been used to extract charm tag efficiencies and purities based on vertex
multiplicities.


title:
Experimental Results on the Diffractive Production of Light Vector
  Mesons at HERA

abstract:
  We discuss results on the diffractive production of the vector mesons rho,
phi and omega reported by the H1 and ZEUS collaborations at HERA. Unique to
such studies is the experimental accessibility to the polarization of the
vector mesons and hence to the spin-density matrix elements arising in
vacuum-exchange processes. We emphasize the relation between the observed
dependence on momentum transfer and the polarization state of the vector meson.
The diffractive nature of the production mechanism is investigated via
extraction of the Pomeron trajectory at high Q^2. Flavor symmetry is observed
in the phi/rho ratios in the same region of momentum transfer where the
power-law scaling becomes similar. The multivariable helicity analyses impose
stringent constraints on models for the vacuum-exchange production mechanism.
Semi-exclusive photoproduction of transverse rho and phi mesons at momentum
transfers far exceeding their mass scale exhibit a hard scaling behavior which
appears to violate the QCD helicity selection rules in a two-gluon exchange
model.


title: The maximum entropy tecniques and the statistical description of systems

abstract:
  The maximum entropy technique (MENT) is used to determine the distribution
functions of physical values. MENT naturally combines required maximum entropy,
the properties of a system and connection conditions in the form of
restrictions imposed on the system. It can, therefore, be employed to
statistically describe closed and open systems. Examples in which MENT is used
to describe equilibrium and non-equilibrium states, as well as steady states
that are far from being in thermodynamic equilibrium, are discussed.


title: A Search for Instantons at HERA

abstract:
  A search for QCD instanton (I) induced events in deep-inelastic scattering
(DIS) at HERA is presented in the kinematic range of low x and low Q^2. After
cutting into three characteristic variables for I-induced events yielding a
maximum suppression of standard DIS background to the 0.1% level while still
preserving 10% of the I-induced events, 549 data events are found while
363^{+22}_{-26} (CDM) and 435^{+36}_{-22} (MEPS) standard DIS events are
expected. More events than expected by the standard DIS Monte Carlo models are
found in the data. However, the systematic uncertainty between the two
different models is of the order of the expected signal, so that a discovery of
instantons can not be claimed. An outlook is given on the prospect to search
for QCD instanton events using a discriminant based on range searching in the
kinematical region Q^2\gtrsim100\GeV^2 where the I-theory makes safer
predictions and the QCD Monte Carlos are expected to better describe the
inclusive data.


title: Selected design issues of a dedicated facility for generic QCD studies

abstract:
  QCD, even if presently out of fashion, deserves a dedicated, generic research
program providing new challenges for the theory and aiming at understanding
hadronic matter and vacuum in terms of quark and gluon degrees of freedom. Such
a research program needs a dedicated facility to re-address basic questions
which remain unanswered and to open new vistas.


title:
Testing CPT and Lorentz Invariance with the Anomalous Spin Precession of
  the Muon

abstract:
  This article discusses tests of CPT and Lorentz invariance with data from the
muon g-2 experiment at Brookhaven National Laboratory. According to an
extension of the Standard Model by Kostelecky et al., CPT/Lorentz violating
terms in the Lagrangian induce a shift of the anomaly frequency omega_a of
muons in a magnetic field. This shift is predicted to be different for positive
and negative muons and to oscillate with the Earth's sidereal frequency. We
discuss the sensitivity of the g-2 experiment to different parameters of this
Standard Model extension and propose an analysis method to search for sidereal
variations of omega_a.


title: The topological branching fractions of $\tau$ decay at LEP

abstract: The paper has heen withdrawn.


title: CATCH 1.4 User's Guide

abstract:
  The Monte Carlo program CATCH (Capture And Transport of CHarged particles in
a crystal) for the simulation of planar channelling in bent crystals is
presented. The program tracks a charged particle through the distorted-crystal
lattice with the use of continuous-potential approximation and the
non-diffusion approach to the processes of scattering on electrons and nuclei.
The output consists of the exit angular distributions, the energy loss spectra,
and the spectra of any close-encounter process of interest. The curvature
variability, face twist, and various surface imperfections of the real crystal
can be taken into account.


title: Simulation of the CERN-SPS crystal extraction experiment

abstract:
  Simulation of the CERN crystal-extraction experiments at the SPS, including
the real crystal geometry and SPS parameters, as well as multiple turns and
passes, has been performed. Two crystals with different geometry have been
tried. We argue that in both cases the extraction experiment suffered from the
crystal edge imperfection. For the experimental conditions reproduced, the
efficiency of the first (twisted) crystal was found to be 12-18% (peak) in the
angular range of 140-260 microrad (FWHM), depending on the vertical beam
position at the crystal location. For the second (U-shaped) crystal the peak
efficiency was much the same, ~19%, while the angular scan FWHM reduced to 70
microrad. These results, as well as the beam profiles, are in agreement with
measurements. Finally we suggest some ways to advance this experiment.


title: The BTeV Vertex Trigger System

abstract:
  The BTeV trigger system will be very ambitious, reconstructing almost all
tracks in real time at 15 million 2-TeV ${\bar p} p$ interactions per second.
The goal is substantially-increased sensitivity to rare effects in heavy-quark
physics over that of existing experiments. The evolution of our approach is
briefly summarized.


title: Excited B and D Mesons at OPAL

abstract:
  Two recent OPAL publications dealing with spectroscopy of heavy-light mesons
will be discussed. In the charm sector, a search for a narrow radial excitation
of the D*+- is performed. No signal is seen, and an upper limit of the
production rate of narrow radial excitations close to the predicted mass of
2.629 GeV is derived. Orbitally excited B** mesons are investigated in another
analysis, where for the first time a measurement of their branching ratio into
final states involving a B* is performed. Attempts are made to separate the B**
signal into the four contributing resonances.


title: On some inverse problems in nuclear physics

abstract:
  Some inverse problems in high-energy physics, neutron diffraction and NMR
spectroscopy are discussed. To solve them, the Fourier integrated
transformation method and the Maximum Entropy Technique (MENT) were used. The
integrated images of experimental distributions are shown to be informative
when determining the space-time parameters of a particle generation zone and
when analysing blurred spectra. The efficiency of the above methods was checked
by comparing relevant results with the results obtained independently.


title: Genuine Correlations of Like-Sign Particles in Hadronic Z0 Decays

abstract:
  Correlations among hadrons with the same electric charge produced in Z0
decays are studied using the high statistics data collected from 1991 through
1995 with the OPAL detector at LEP. Normalized factorial cumulants up to fourth
order are used to measure genuine particle correlations as a function of the
size of phase space domains in rapidity, azimuthal angle and transverse
momentum. Both all-charge and like-sign particle combinations show strong
positive genuine correlations. One-dimensional cumulants initially increase
rapidly with decreasing size of the phase space cells but saturate quickly. In
contrast, cumulants in two- and three-dimensional domains continue to increase.
The strong rise of the cumulants for all-charge multiplets is increasingly
driven by that of like-sign multiplets. This points to the likely influence of
Bose-Einstein correlations. Some of the recently proposed algorithms to
simulate Bose-Einstein effects, implemented in the Monte Carlo model PYTHIA,
are found to reproduce reasonably well the measured second- and higher-order
correlations between particles with the same charge as well as those in
all-charge particle multiplets.


title: Light Meson Physics from Charm Decays at Fermilab E791

abstract:
  We present recent results on light mesons based on Dalitz plot analyses of
charm decays from Fermilab experiment E791. Scalar mesons are found to have
large contributions to the decays studied, $D^+\to K^-\pi^+\pi^+$ and $D^+,
D_s^+\to\pi^-\pi^+\pi^+$. From the $K\pi\pi$ final state, we find good evidence
for the existence of the light and broad $\kappa$ meson and we measure its mass
and width. We also discuss recently published results on the 3$\pi$ final
states, especially the measurement of the $f_0$ parameters and the evidence for
the $\sigma$ meson from $D^+\to\sigma\pi^+$. These results demonstrate the
importance of charm decays as a new environment for the study of light meson
physics.


title:
Search for direct CP violation in B to K pi, pi pi, K K, Quasi-Two-Body
  B decays and B to K* gamma with the BABAR detector at the PEP-II collider

abstract:
  A sample of 23 million B B-bar events collected with the BABAR detector at
the PEP-II collider is used in a search for direct CP violation in charmless
two-body B decays, quasi two-body B decays, and the radiative penguin decays B
to K* gamma. No evidence for direct CP violation is found in the considered
modes and 90% confidence level limits are reported. We also present a limit on
the branching fraction of the decay B0 to gamma gamma.


title: ElectroWeak Symmetry Breaking in Tevatron Run II

abstract:
  The Tevatron Run II will provide CDF and D0 with a large dataset of ppbar
interactions collected at sqrt(s)=2 TeV. We discuss the opportunity for the two
experiments to improve the understanding of electrowek and top physics in the
first years of data taking (Run IIa,2fb-1) in view of the upgrades of the
detectors. We also discuss the prospectives for a Higgs discovery at the
Tevatron in view of the Run IIb data taking period which will deliver an
additional of about 13fb-1 to each experiment


title: Observation of $\bar{B}^0\to D^0\pi^0$ and $\bar{B}^0\to D^{*0}\pi^0$

abstract:
  We have studied the color-suppressed hadronic decays of neutral B mesons into
the final states D(*)0 pi0. Using 9.67 million B-pairs collected with the CLEO
detector, we observe the decays B0bar -> D0 pi0 and B0bar -> D*0 pi0 with the
branching fractions BR(B0bar -> D0 pi0) = (2.74 -0.32 +0.36 +-0.55) 10^{-4} and
BR(B0bar -> D*0 pi0) = (2.20 -0.52 +0.59 +-0.79) 10^{-4}. The first error is
statistical and the second systematic. The statistical significance of the D0
pi0 signal is 12.1 sigma (5.9 sigma for D*0 pi0). Utilizing the B0bar -> D(*)0
pi0 branching fractions we determine the strong phases delta_I between isospin
1/2 and 3/2 amplitudes in the D pi and D* pi final states to be cos delta_I =
0.89 +- 0.08 and cos delta_I = 0.89 +- 0.08, respectively.


title: Search for Technicolor with DELPHI

abstract:
  Technicolor represents a viable alternative to the Higgs mechanism for
generating gauge boson masses. Searches for technicolor particles rho_T and
pi_T have been performed in the data collected by the DELPHI experiment at LEP
at centre-of-mass energies between 192 and 208 GeV corresponding to an
integrated luminosity of 452 pb^{-1}. Good agreement is observed with the SM
expectation in all channels studied. This is translated into an excluded region
in the (M_{pi_T},M_{rho_T}) plane. The rho_T production is excluded for all 90
< M_{rho_T} < 206.7 GeV/c^2. Assuming a point-like interaction of the pi_T with
gauge bosons, an absolute lower limit on the charged pi_T mass at 95% CL is set
at 79.8 GeV/c^2, independently of other parameters of the technicolor model.


title:
Search for R-parity Violating Decays of Supersymmetric Particles in e+e-
  Collisions at LEP

abstract:
  A search, in e^+e^- collisions, for chargino, neutralino, scalar lepton and
scalar quark pair-production is performed, without assuming R-parity
conservation in decays, in the case that only one of the coupling constants
lambda_ijk or lambda''_ijk is non-negligible. No signal is found in data up to
a centre-of-mass energy of 208GeV. Limits on the production cross sections and
on the masses of supersymmetric particles are derived.


title: Measurement of the Xi^+_c Lifetime

abstract:
  The Xi^+_c lifetime is measured using 9.0 fb^-1 of e+e- annihilation data
collected on and just below the Upsilon(4S) resonance with the CLEO II.V
detector at CESR. This is the first measurement of the Xi^+_c lifetime from a
collider experiment. Using an unbinned maximum likelihood fit, the Xi^+_c
lifetime is measured to be 503 +/- 47 (stat.) +/- 18 (syst.) fs. The precision
of this measurement is comparable to previous measurements carried out by fixed
target experiments with different sources of systematic uncertainties.


title:
A Precise Determination of Electroweak Parameters in Neutrino-Nucleon
  Scattering

abstract:
  The NuTeV collaboration has extracted sin^2theta_W from the ratios of neutral
current to charged current neutrino and anti-neutrino cross-sections. Our
value, sin^2theta_W(on-shell)=0.2277+/-0.0013(stat)+/-0.0009(syst), is three
standard deviations above the standard model prediction. We also present a
model independent analysis of the same data.


title: Computer simulation of the tevatron crystal extraction experiment

abstract:
  The Fermilab crystal-extraction experiment E853 at Tevatron was simulated by
Monte Carlo code CATCH [1] tested earlier in the CERN-SPS experiment [2-4].
Predictions for the extraction efficiency, angular scans and extracted beam
profiles are presented. Several ideas are proposed and tested by the
simulation, how to get in E853 the key information of the extraction
experiment: the "septum width" of a crystal and dependence of extraction
efficiency on it, the impact parameters of protons at crystal, and the
contribution of the first and multi passes to the extraction. The ways to
optimize E853 are analyzed.


title:
Improved constraints on WIMPs from the International Germanium
  Experiment IGEX

abstract:
  One IGEX 76Ge double-beta decay detector is currently operating in the
Canfranc Underground Laboratory in a search for dark matter WIMPs, through the
Ge nuclear recoil produced by the WIMP elastic scattering. A new exclusion
plot, has been derived for WIMP-nucleon spin-independent interactions. To
obtain this result, 40 days of data from the IGEX detector (energy threshold E
\~ 4 keV), recently collected, have been analyzed. These data improve the
exclusion limits derived from all the other ionization germanium detectors in
the mass region from 20 GeV to 200 GeV, where a WIMP supposedly responsible for
the annual modulation effect reported by the DAMA experiment would be located.
The new IGEX exclusion contour enters, by the first time, the DAMA region by
using only raw data, with no background discrimination, and excludes its upper
left part. It is also shown that with a moderate improvement of the detector
performances, the DAMA region could be fully explored.


title: Study of CP-violating asymmetries in B^0 --> pi^+pi^-, K^+pi^- decays

abstract:
  We present a measurement of the time-dependent CP-violating asymmetries in
neutral B decays to the $\pi^+\pi^-$ CP eigenstate, and an updated measurement
of the charge asymmetry in $B^0\to K^+\pi^-$ decays. In a sample of 33 million
$\Upsilon(4S)\to B\bar B$ decays collected with the BABAR detector at the SLAC
PEP-II asymmetric $B$ Factory, we find $65^{+12}_{-11}$ $\pi^+\pi^-$ and
$217\pm 18$ $K^+\pi^-$ candidates and measure the asymmetry parameters
$S_{\pi\pi} = 0.03^{+0.53}_{-0.56}\pm 0.11$, $C_{\pi\pi} =
-0.25^{+0.45}_{-0.47}\pm 0.14$, and ${\cal A}_{K\pi} = -0.07 \pm 0.08 \pm
0.02$, where the first error is statistical and the second is systematic.


title: Analysis of Purity Probes H1 Liquid Argon Calorimeter

abstract:
  The sensitivity of our liquid argon purity measurement -around 0.03%- leads
us to refine the tools used classically in this field. First we introduce an
analytical form describing the spectrum of a 207Bi source for different values
of purity and ionisation chamber gap. Second we analyse a surprising new
effect: the variation of the ionisation yield of this source with the liquid
argon temperature. Third we use our data to refine the charge collection models
which relate electron recombination and attachment cross-sections to the
electrical field.


title: Observation of CP violation in the $B^0$ system

abstract:
  The BABAR detector, operating at energies near the $\Upsilon(4S)$ resonance
at the PEP-II asymmetric $B$ Factory at SLAC, has collected a sample of 32
million $B\bar B$ pairs by May 2001. A study of time-dependent CP-violating
asymmetries in events where one neutral $B$ meson is fully reconstructed in a
final state containing charmonium has resulted in the measurement
$\sin2\beta=0.59 \pm 0.14 {\rm (stat)} \pm 0.05 {\rm (syst)}$, which
establishes CP violation in the $B^0$ meson system at the 4$\sigma$ level. $B$
lifetime and mixing measurements from a sub-sample of 23 million $B\bar B$
pairs are also presented.


title: Measurement of B-->K*gamma Branching Fractions and Charge Asymmetries

abstract:
  The branching fractions of the exclusive decays $B^0\to K^{*0}\gamma$ and
$B^+ \to K^{*+}\gamma$ are measured from a sample of $(22.74\pm 0.36)\times
10^6$ $B\bar B$ decays collected with the BABAR detector at the PEP II
asymmetric $e^{+}e^{-}$ collider. We find ${\cal B}(B^0\to K^{*0}\gamma) =
(4.23\pm 0.40({\rm stat.})\pm 0.22({\rm sys.}))\times 10^{-5}$, ${\cal
B}(B^+\to K^{*+}\gamma) = (3.83\pm 0.62({\rm stat.})\pm 0.22({\rm sys.}))\times
10^{-5}$ and constrain the CP-violating charge asymmetry to be $-0.170 <
A_{CP}(B \to K^*\gamma) < 0.082$ at 90% C.L.