title: Electroweak Precision Tests with a Future Linear Collider

abstract:
  Future high energy linear electron positron colliders with centre-of-mass
enegies between 90 and 1000 GeV offer a unique opportunity to study precisely
the Standard Model and phenomena from new physics. Most important, the
mechanism of electroweak symmetry breaking can be established in full depth if
one or more Higgs bosons are observed. Precision measurements of electroweak
processes open a window into the multi-TeV energy range for searching for new
physics, which is of particular importance if no light Higgs boson is observed.


title:
Search for Single-Top-Quark Production in p-pbar Collisions at
  sqrt(s)=1.8 TeV

abstract:
  We search for standard model single-top-quark production in the W-gluon
fusion and W* channels using 106 pb^-1 of data from p-pbar collisions at
sqrt(s)=1.8 TeV collected with the Collider Detector at Fermilab. We set an
upper limit at 95% C.L. on the combined W-gluon fusion and W* single-top cross
section of 14 pb, roughly six times larger than the standard model prediction.
Separate 95% C.L. upper limits in the W-gluon fusion and W* channels are also
determined and are found to be 13 and 18 pb, respectively.


title: The LCDROOT Analysis Package

abstract:
  The North American Linear Collider Detector group has developed simulation
and analysis program packages. LCDROOT is one of the packages, and is based on
ROOT and the C++ programing language to maximally benefit from object oriented
programming techniques. LCDROOT is constantly improved and now has a new
topological vertex finder, ZVTOP3. In this proceeding, the features of the
LCDROOT simulation are briefly described.


title: Beyond the standard model physics at RHIC in polarized pp collision

abstract:
  A polarized hadron collider experiment must have a great discovery potential
for a search of physics beyond the standard model. Experimental data of various
symmetry tests at RHIC are going to be obtained within a few years. The author
developed a simulation tool, studying a sensitivity of hunting contact
interaction at RHIC by measuring parity violating spin asymmetries.


title: Statistical Errors in the Measurement of Particle Thresholds

abstract:
  Simple rules of thumb are derived for the precision with which s-wave and
p-wave thresholds can be determined by a series of equally spaced cross section
mesasurements near threshold. Backgrounds and beam spreads are ignored.


title:
Measurement of the Masses and Widths of the Sigma_c^++ and Sigma_c^0
  Charmed Baryons

abstract:
  Using data recorded by the CLEO II and CLEO II.V detector configurations at
CESR, we report new measurements of the masses of the Sigma_c^{++} and
Sigma_c^0 charmed baryons, and the first measurements of their intrinsic
widths. We find M(Sigma_c^{++}) - M(Lambda_c^+) = 167.4 +- 0.1 +- 0.2 MeV,
Gamma(Sigma_c^{++}) = 2.3 +- 0.2 +- 0.3 MeV, and M(Sigma_c^0) - M(Lambda_c^+) =
167.2 +- 0.1 +- 0.2 MeV, Gamma(Sigma_c^0) = 2.5 +- 0.2 +- 0.3 MeV, where the
uncertainties are statistical and systematic, respectively.


title:
Measurement of charged-particle multiplicity distributions and their H_q
  moments in hadronic Z decays at LEP

abstract:
  The charged-particle multiplicity distribution is measured for all hadronic
events as well as for light-quark and b-quark events produced in e+e-
collisions at the Z pole. Moments of the charged-particle multiplicity
distributions are calculated. The H moments of the multiplicity distributions
are studied, and their quasi-oscillations as a function of the rank of the
moment are investigated.


title: f_1(1285) Formation in Two-Photon Collisions at LEP

abstract:
  The eta pi^+ pi^- final state in two-photon collisions is studied with the L3
detector at LEP, at centre-of-mass energies from 183 to 209 GeV with an
integrated luminosity of 664.6/pb. The f_1(1285) meson is observed and the Q^2
dependence of its production is compared to different form factor models. The
gamma-gamma coupling parameter is found to be 3.5 +/- 0.6(stat.) +/- 0.5(sys.)
keV. The branching fraction (f_1(1285) -> a_0 pi) / (f_1(1285) -> eta pi pi) is
also measured.


title: Simulation of crystal extraction experiments

abstract:
  We discuss the simulation methods and results for the crystal extraction
experiments performed recently at the high energy accelerators. Possible future
applications of the crystal channeling technique are considered.


title: The JPC=1-+ hunting season at VES

abstract:
  We present preliminary results of study of the ethapi-, etha'pi- and b1pi
systems produced in the pi-Be-interaction at 28GeV/c. JPC=2++ and 1-+-waves
resulted from the PWA have been fitted in each system separately to establish
the nature of the 1-+ wave. A hypothesis of the 1-+ wave resonant nature in the
ethapi- and etha'pi- has no statistically significant preference over the
non-resonant one. The b1pi-system study confirms the results of the 37GeV/c
beam data analysis in favor of the resonant treatment of the bump at 1.6GeV.


title: Higgs Searches at LEP and at the Tevatron

abstract:
  After years of efforts to push the LEP performance to, and indeed beyond, the
limits of what had been believed possible, hints of signal of a Higgs boson at
115GeV/c2 appeared in June 2000, were confirmed in September, and confirmed
again in November. Spending an additional six-month period with LEP would have
given the unambiguous opportunity of a fundamental discovery. Instead, this
possibilty was handed over to the Tevatron, for which at least si more years
will be needed to confirm the existence of a Higgs boson around 115GeV/c2. The
upgrades performed at LEP and needed at the Tevatron, together with the physics
outcomes, are briefly mentioned in turn.


title: Review of Final LEP Results or A Tribute to LEP

abstract:
  After a comment on the performance of LEP some highlights of the LEP1 and
LEP2 physics programmes are reviewed. The talk concentrates on the precision
measurements at the Z resonance, two fermion production above the Z, W+W-
production, ZZ production, indirect limits on the Higgs mass, LEP contributions
to the exploration of the CKM matrix, and on the LEP measurements of alpha_s.


title: Summary of the structure function session at PHOTON 2001

abstract:
  The status of and ongoing developments in the measurements and theoretical
studies of the structure of the photon have been presented at the PHOTON 2001
conference in Ascona. The results presented in the structure function session
are briefly summarised.


title: Jets and multiplicities in e+e-

abstract:
  Recent results on jet and inclusive charged particle production in hadronic
e+e- interactions are reviewed.


title: Analytical theory of multipass crystal extraction

abstract:
  An analytical theory for the efficiency of particle extraction from an
accelerator by means of a bent crystal is proposed. The theory agrees with all
the measurements performed in the broad energy range of 14 to 900 GeV, where
the efficiency range also spans over two decades, from 0.3% to 30%.
Possibilities for crystal extraction from sub-GeV accelerators and from muon
colliders are discussed.


title: CP violation in B decays at the BaBar experiment

abstract:
  The BaBar detector and SLAC PEP-II asymmetric e+e- collider tuned to the
Y(4s) resonance has collected around 23M B0 anti-B0 pairs in year 2000. The
total data sample for run 1 is 20.7fb-1, using this data we present the study
of sin2beta, with samples of B0 --> J/Psi KOS, B0 --> psi(2S) K0S and B0 -->
J/Psi KOL decays. The measured value is sin2beta 0.34+/-0.20 (stat) +/- 0.05
(syst),. In addition, we present preliminary measurements of charged and
neutral B meson lifetimes and B0-anti B0 oscillation frequency.


title: Virtual Photon Structure at HERA

abstract:
  Measurements of the structure of the virtual photon in the transition region
between quasi-real photons and those far from mass-shell have been made with
the ZEUS detector at HERA, using an integrated luminosity of 38pb-1. Dijet
final states are identified, and differential cross sections are presented in
terms of xgo, an estimator of the fraction of the photon energy which takes
part in the QCD subprocess. Comparison is made to theoretical predictions.


title:
A combined analysis technique for the search for fast magnetic monopoles
  with the MACRO detector

abstract:
  We describe a search method for fast moving ($\beta > 5 \times 10^{-3}$)
magnetic monopoles using simultaneously the scintillator, streamer tube and
track-etch subdetectors of the MACRO apparatus. The first two subdetectors are
used primarily for the identification of candidates while the track-etch one is
used as the final tool for their rejection or confirmation. Using this
technique, a first sample of more than two years of data has been analyzed
without any evidence of a magnetic monopole. We set a 90% CL upper limit to the
local monopole flux of $1.5 \times 10^{-15} cm^{-2} s^{-1} sr^{-1}$ in the
velocity range $5 \times 10^{-3} \le \beta \le 0.99$ and for nucleon decay
catalysis cross section smaller than $\sim 1 mb$.


title: Differences between Quark and Gluon jets as seen at LEP

abstract:
  The differences between quark and gluon jets are studied using LEP results on
jet widths, scale dependent multiplicities, ratios of multiplicities, slopes
and curvatures and fragmentation functions. It is emphasized that the observed
differences stem primarily from the different quark and gluon colour factors.


title: Substructure of jets at HERA

abstract:
  The substructure of jets produced in an exclusive and a charm-induced dijet
sample in photoproduction and in charged and neutral current interactions has
been studied with the ZEUS detector at HERA. Jets were identified using the
longitudinally invariant k_T cluster algorithm in the laboratory frame. The
substructure of jets has been studied in terms of the jet shape and subjet
multiplicity. Comparisons between the dijet sample and the quark-induced
samples allow an extraction of the jet substructure for gluons.
Leading-logarithm parton-shower Monte Carlo calculations give a good
description of the differences between quark- and gluon-initiated jets. In
neutral current interactions, the measurements have been compared to
next-to-leading-order QCD calculations which are used to make a determination
of the strong coupling constant, alpha_s.


title: Experimental Tests of the Standard Model

abstract:
  The current status of experimental tests of the electroweak sector of the
Standard Model is reviewed.


title: Hyperon photo- and electroproduction at CLAS

abstract:
  The large acceptance and high multiplicity capabilities of the CLAS detector
make it possible to study a wide range of previously unmeasured strange baryon
production processes. Studies of the decay angular distributions of
electroproduced strange baryons have yielded several interesting new results.
The $\Lambda$(1520) electroproduction decay angular distributions shed light on
the spin projections of the $\Lambda$(1520). Analysis of the decay angular
distributions of the weakly decaying $\Lambda$(1116) have revealed the induced
baryon polarization due to unpolarized incident electron beams. In addition to
these topics, other features of the CLAS strange baryon program, such as
photoproduction and virtual photon L-T decompositions, are also briefly
summarized.


title:
Application of bent crystals at IHEP 70-GeV accelerator to enhance the
  efficiency of its usage

abstract:
  Bent crystal was extracting 70-GeV protons with average intensity 4*10^11 (as
measured in external beamline) per spill of 1.6 s duration, in parallel to the
simultaneous work of two internal targets in the accelerator ring. An
additional crystal, placed in the external beamline, was deflecting a small
part of the extracted beam with intensity 10^7 protons toward another physics
experiment. Crystal-extracted beam had a typical size of 4 mm by 4 mm fwhm at
the end of the external beamline. Measurements for the extraction efficiency
and other characteristics at the simultaneous work of four experimental set-ups
are presented. With crystal working in the above-said regime during one month,
no degradation of channeling was observed. The studies of extraction efficiency
have been continued with new crystals.


title: Sensitivities of Low Energy Reactor Neutrino Experiments

abstract:
  The low energy part of the reactor neutrino spectra has not been
experimentally measured. Its uncertainties limit the sensitivities in certain
reactor neutrino experiments. The origin of these uncertainties are discussed,
and the effects on measurements of neutrino interactions with electrons and
nuclei are studied. Comparisons are made with existing results. In particular,
the discrepancies between previous measurements with Standard Model
expectations can be explained by an under-estimation of the low energy reactor
neutrino spectra. To optimize the experimental sensitivities, measurements for
$\nuebar$-e cross-sections should focus on events with large ($>$1.5 MeV)
recoil energy while those for neutrino magnetic moment searches should be based
on events $<$100 keV. The merits and attainable accuracies for
neutrino-electron scattering experiments using artificial neutrino sources are
discussed.


title: Three body decays of D0 and DS mesons

abstract:
  Results are presented on the study of three body decays of D0 -> K0s h+ h-,
where h=pi/K and DS+ -> K0S K0S pi+. The data have been collected by the BaBar
experiment at SLAC and are extracted from continuum e+ e- annihilations at the
Upsilon(4S) energy.


title: The ALEPH Search for the Standard Model Higgs Boson

abstract:
  A search has been performed for the Standard Model Higgs boson in the data
collected with the ALEPH detector in 2000. An excess of 3 sigma above the
background expectation is found. The observed excess is consistent with the
production of the Higgs boson with a mass close to 114 GeV/c2.


title: Measurement of Dijet Electroproduction at Small Jet Separation

abstract:
  Deep-inelastic scattering data in the range 150 < Q^2 < 35000 GeV^2 are used
to investigate the minimum jet separation necessary to allow accurate
description of the rate of dijet production using next-to-leading order
perturbative QCD calculations. The required jet separation is found to be
small, allowing about 1/3 of DIS data to be classified as dijet, as opposed to
approximately 1/10 with more typical jet analyses. A number of precision
measurements made using this dijet sample are well described by the
calculations. The data are also described by the combination of leading order
matrix elements and parton showers, as implemented in the QCD based Monte Carlo
model RAPGAP.


title: BTeV Level 1 Vertex Trigger

abstract:
  BTeV is a $B$-physics experiment that expects to begin collecting data at the
C0 interaction region of the Fermilab Tevatron in the year 2006. Its primary
goal is to achieve unprecedented levels of sensitivity in the study of CP
violation, mixing, and rare decays in $b$ and $c$ quark systems. In order to
realize this, it will employ a state-of-the-art first-level vertex trigger
(Level 1) that will look at every beam crossing to identify detached secondary
vertices that provide evidence for heavy quark decays. This talk will briefly
describe the BTeV detector and trigger, focus on the software and hardware
aspects of the Level 1 vertex trigger, and describe work currently being done
in these areas.


title: Elastic Vector Meson Production at HERA

abstract:
  The H1 and ZEUS Collaborations report new results on elastic VM cross-section
and trajectory determination. Elastic VM production appears to be independent
of the photon polarization. The presence of non-zero shrinkage in the
photoproduction of J/psi indicates the presence of soft physics. Accumulated
data do not accommodate a universal Pomeron trajectory. The steepness of the x
dependence of elastic VM production with changing Q^2+M_V^2 is similar to that
of F_2 with changing Q^2.


title:
Research and Development towards a Detector for a High Energy
  Electron-Positron Linear Collider

abstract:
  This exposition provides a detailed picture of ongoing and planned activities
towards the development of a detector for a high-energy Linear Collider. Cases
for which research and development activity does not exist, or needs to be
bolstered, are identified for the various subsystems. The case is made that the
full exploitation of the potential of a high-energy Linear Collider will
require the augmentation of existing detector technology and simulation
capability, and that this program should become a major focus of the worldwide
particle physics community should the construction of a Linear Collider become
likely.


title: Search for Yukawa Production of a Light Neutral Higgs Boson at LEP

abstract:
  Within a Two-Higgs-Doublet Model (2HDM) a search for a light Higgs boson in
the mass range of 4-12 GeV has been performed in the Yukawa process e+e- -> b
bbar A/h -> b bbar tau+tau-, using the data collected by the OPAL detector at
LEP between 1992 and 1995 in e+e- collisions at about 91 GeV centre-of-mass
energy. A likelihood selection is applied to separate background and signal.
The number of observed events is in good agreement with the expected
background. Within a CP-conserving 2HDM type II model the cross-section for
Yukawa production depends on xiAd = |tan beta| and xihd = |sin alpha/cos beta|
for the production of the CP-odd A and the CP-even h, respectively, where tan
beta is the ratio of the vacuum expectation values of the Higgs doublets and
alpha is the mixing angle between the neutral CP-even Higgs bosons. From our
data 95% C.L. upper limits are derived for xiAd within the range of 8.5 to 13.6
and for xihd between 8.2 to 13.7, depending on the mass of the Higgs boson,
assuming a branching fraction into tau+tau- of 100%. An interpretation of the
limits within a 2HDM type II model with Standard Model particle content is
given. These results impose constraints on several models that have been
proposed to explain the recent BNL measurement of the muon anomalous magnetic
moment.


title: Rare and Hadronic B decays with CLEO

abstract:
  Based on the CLEO II and II.5 data sets CLEO has observed several new rare
and hadronic B decays and also updated the b->s+gamma measurement.


title: Double-Tag Events in Two-Photon Collisions at LEP

abstract:
  Double-tag events in two-photon collisions are studied using the L3 detector
at LEP centre-of-mass energies from root(s)=189 GeV to 209 GeV. The cross
sections of the e+e- -> e+e- hadrons and gamma*gamma* -> hadrons processes are
measured as a function of the photon virtualities, Q1^2 and Q2^2, of the
two-photon mass, W_gammagamma, and of the variable Y=ln(W_gammagamma^2/(Q1
Q2)), for an average photon virtuality <Q2> = 16 GeV2. The results are in
agreement with next-to-leading order calculations for the process gamma*gamma*
-> q qbar in the interval 2 <= Y <= 5. An excess is observed in the interval 5
< Y <= 7, corresponding to W_gammagamma greater than 40 GeV . This may be
interpreted as a sign of resolved photon QCD processes or the onset of BFKL
phenomena.


title: Particle multiplicity of unbiased gluon jets from e+e- three-jet events

abstract:
  The charged particle multiplicities of two- and three-jet events from the
reaction e+e- -> Z0 -> hadrons are measured for Z0 decays to light quark (uds)
flavors. Using recent theoretical expressions to account for biases from event
selection, results corresponding to unbiased gluon jets are extracted over a
range of jet energies from about 11 to 30 GeV. We find consistency between
these results and direct measurements of unbiased gluon jet multiplicity from
upsilon and Z0 decays. The unbiased gluon jet data including the direct
measurements are compared to corresponding results for quark jets. We perform
fits based on analytic expressions for particle multiplicity in jets to
determine the ratio r = Ng/Nq of multiplicities between gluon and quark jets as
a function of energy. We also determine the ratio of slopes, r(1) =
(dNg/dy)/(dNq/dy), and of curvatures, r(2) = (d2Ng/dy2)/(d2Nq/dy2), where y
specifies the energy scale. At 30 GeV, we find r = 1.422 +/- 0.051, r(1) =
1.761 +/- 0.071 and r(2) = 1.98 +/- 0.13, where the uncertainties are the
statistical and systematic terms added in quadrature. These results are in
general agreement with theoretical predictions. In addition, we use the
measurements of the energy dependence of Ng and Nq to determine an effective
value of the ratio of QCD color factors, CA/CF. Our result, CA/CF = 2.23 +/-
0.14 (total), is consistent with the QCD value of 2.25.


title: Fermion pair production at LEP2 and interpretations

abstract:
  Preliminary results on $e^+ e^- \to f \bar{f}$, $f=e, \mu, \tau, q$,
including all LEP2 data are discussed. Good agreement is found with the
Standard Model up to the highest energies. Limits on possible new physics are
extracted.


title: The TESLA Detector

abstract:
  For the superconducting linear collider TESLA a multi purpose detector has
been designed. This detector is optimised for the important physics processes
expected at a next generation linear collider up to around 1 TeV and is
designed for the specific environment of a superconducting collider.


title: Neutrino Factory and Muon Collider R&D

abstract:
  European, Japanese, and US Neutrino Factory designs are presented. The main
R&D issues and associated R&D programs, future prospects, and the additional
issues that must be addressed to produce a viable Muon Collider design, are
discussed.


title: Charmless hadronic B decays at BABAR

abstract:
  Using 22.7M BBbar events collected with the BABAR detector at SLAC, we
present preliminary measurements of the branching fractions for charmless
hadronic decays of B mesons into two-body, quasi two-body and three-body final
states with pions, kaons, and rho and a0 resonances. In the search for
exclusive $B^0 \to \pi^+\pi^-\pi^0$, we measure ${\cal B}(B^0 \to
\rho^{\pm}(770)\pi^{\mp})=(28.9\pm5.4\pm4.3) \times 10^{-6}$, together with the
relative asymmetry ${\cal A}_{\rm phys} = -0.04 \pm 0.18 \pm 0.02$. We also set
the upper limits on $B^0 \to \rho^0(770)\pi^0$, non-resonant $B^0 \to
\pi^+\pi^-\pi^0$, $B^0 \to a_0^{\pm}(\to \eta\pi^{\pm})\pi^{\mp}$ and $B^0 \to
K^0\bar K^0$.


title: Simulation of beam steering phenomena in bent crystals

abstract:
  The simulation methods for the channeling phenomena in GeV/TeV energy range
in ideal or distorted crystal lattices are discussed. Monte Carlo predictions
for feed-out and feed-in rates, dislocation dechanneling, and deflection
efficiencies of bent crystals are compared to the experimental data. The role
of multiple interactions with crystal in circular accelerators ("multipass
channeling") for the efficiency boost in the crystal-aided extraction
experiments is analysed. Possible future applications of the crystal channeling
technique are considered.


title: Structure of Virtual Photons at HERA

abstract:
  Triple differential dijet cross-sections in e p interactions measured with
the H1 and ZEUS detectors at HERA are presented. The data are compared to Monte
Carlo simulations which differ in their assumptions about photon structure and
parton evolution. Effects of the resolved processes of longitudinally polarized
virtual photons at HERA are investigated for the first time.


title: Summary of session on jets and inclusive hadron production

abstract:
  Some highlights of the session on jets and hadron production are summarised.
Results between different experiments and measurements are compared and, in
particular, how LEP and HERA complement each other discussed. Improvements in
both theory and experiment for jet and hadron production and how the
measurements can be used to extract fundamental parameters are addressed.


title: A study of RHIC crystal collimation

abstract:
  The Relativistic Heavy Ion Collider (RHIC) will experience increasing
longitudinal and transverse heavy ion emittances, mostly due to intra-beam
scattering (IBS). The experiments in RHIC are expected to not only have reduced
luminosities due to IBS but also an unwanted beam halo. Primary betatron
collimators will be used to remove the large amplitude particles. The
efficiency of the primary collimator in RHIC depends very much on the alignment
of the jaws which needs to be within few micro-radians for the best conditions.
As proposed by V. Biryukov bent crystals could be used to improve the
efficiency of an existing collimation system by installing them upstream of the
collimator jaws. Bent crystals have been successfully used in SPS, Protvino and
Fermilab for extraction of the beam particles channeled through them. This
study examines possible improvements of the primary collimator system for heavy
ions at RHIC by use of bent crystals. Bent crystals will reduce the collimator
jaws alignment requirement and will increase collimator efficiency thereby
reducing detector background.


title: Recent Results of BABAR

abstract:
  The BABAR detector at SLAC's PEP-II storage ring has collected data
equivalent to about 30.4 fb-1 through June 2001. Results on CP violation, and
in particular searches for direct CP violation, and measurement of rare B
decays are presented.


title: Heavy-Flavoured Jets at HERA

abstract:
  Heavy-flavoured jets have been studied in photoproduction at HERA. This
includes the first measurement of dijet angular distributions in D*
photoproduction and the ratio of the vector/(vector + pseudoscalar) production
rate for charm mesons.


title:
Lifetime Differences, direct CP Violation and Partial Widths in D0 Meson
  Decays to K+K- and pi+pi-

abstract:
  We describe several measurements using the decays D0->K+K- and pi+pi-. We
find the ratio of partial widths, Gamma(D0->K+K-)/Gamma(D0->pi+pi-), to be
2.96+/-0.16+/-0.15, where the first error is statistical and the second is
systematic. We observe no evidence for direct CP violation, obtaining A_CP(KK)
= (0.0+/-2.2+/-0.8)% and A_CP(pipi = (1.9+/-3.2+/-0.8)%. In the limit of no CP
violation we measure the mixing parameter y_CP = -0.012+/-0.025+/-0.014 by
measuring the lifetime difference between D0->K+ K- or pi+pi- and the CP
neutral state, D0->K-pi+. We see no evidence for mixing.


title: The new Magnetic Measurement System at the Advanced Photon Source

abstract:
  A new system for precise measurements of the field integrals and multipole
components of the APS magnetic insertion devices is described. A stretched coil
is used to measure magnetic field characteristics. The hardware includes a
number of servomotors to move (translate or rotate) the coil and a fast data
acquisition board to measure the coil signal. A PC under Linux is used as a
control workstation. The user interface is written as a Tcl/tk script. The
hardware is accessed from the script through a shared C-library. A description
of the hardware system and the control program is given.


title: A Measurement of Lifetime Difference in $D^0$ Meson Decays

abstract:
  We report a measurement of the $D^0$-$\bar{D}{}^0$ mixing parameter $y_{CP}$
using 23.4 fb$^{-1}$ of data collected near the $\Upsilon$(4S) resonance with
the Belle detector at KEKB. $y_{CP}$ is measured from the lifetime difference
of $D^0$ mesons decaying into the $K^-\pi^+$ state and the CP even eigenstate
$K^-K^+$. We find $y_{CP}=(-0.5\pm 1.0{}^{+0.7}_{-0.8})\times10^{-2}$, where
the first error is statistical and the second systematic, corresponding to a
95% confidence interval $-0.030 < y_{CP} < 0.020$.


title: Measurement of Natural Widths of Sigma-c-0 and Sigma-c-++ Baryons

abstract:
  In this paper we present a measurement of the natural widths of $\Sigma_c^0$
and $\Sigma_c^{++}$. Using data from the FOCUS experiment, we find
$\Gamma(\Sigma_c^0) = 1.55 +0.41/-0.37 \pm 0.38$ MeV/c^2 and
$\Gamma(\Sigma_c^0) = 2.05 +0.41/-0.38 \pm 0.38$ MeV/c^2. The first errors are
statistical, the second systematic. These results are obtained with a sample of
913 $\Sigma_c^0 \to \Lambda_c^+ \pi^-$ decays and 1110 $\Sigma_c^++ \to
\Lambda_c^+ \pi^+$ decays. These results are compared with recent theoretical
predictions. PACS numbers: 14.20.Lq 13.30Eg


title: New projects of crystal extraction at IHEP 70-GeV accelerator

abstract:
  Using channeling in a 5-mm crystal with bending angle of 0.65 mrad, a record
high efficiency, over 60%, of particle extraction from accelerator was
achieved. The extracted beam intensity was up to 5.2*10^11 protons per spill of
0.5 s duration. Also, the first proof-of-principle experiment on 'crystal
collimation' was performed where crystal - serving as a scraper - has reduced
the radiation level in the accelerator by a factor of two. The measurements
agree with Monte Carlo predictions.


title:
Study of the W+W-gamma Process and Limits on Anomalous Quartic Gauge
  Boson Couplings at LEP

abstract:
  The process e+e- -> W+ W- gamma is studied using the data collected by the L3
detector at LEP. New results, corresponding to an integrated luminosity of
427.4 pb-1 at centre-of-mass energies from 192 GeV to 207 GeV, are presented.
  The W+W- gamma cross sections are measured to be in agreement with Standard
Model expectations. No hints of anomalous quartic gauge boson couplings are
observed. Limits at 95% confidence level are derived using also the process
e+e- --> nu nubar gamma gamma.


title:
Search for the lepton-family-number nonconserving decay \mu -> e +
  \gamma

abstract:
  The MEGA experiment, which searched for the muon- and electron-number
violating decay \mu -> e + \gamma, is described. The spectrometer system, the
calibrations, the data taking procedures, the data analysis, and the
sensitivity of the experiment are discussed. The most stringent upper limit on
the branching ratio of \mu -> e + \gamma) < 1.2 x 10^{-11} was obtained.


title: The spin structure function of the neutron

abstract:
  The neutron spin structure function, $g_{1n}$, has been of considerable
interest recently in connection with the Bjorken sum rule and the proton spin
crisis. Work on this problem has concentrated on measurements at low-$x$. We
recall the important, non-perturbative physics to be learnt by going instead to
larger values of $x$ and especially from a determination of the place where the
expected sign change occurs. Of course, in order to obtain neutron data one
must use nuclear targets and apply appropriate corrections. In this regard, we
review recent progress concerning the various nuclear corrections that must be
applied to measurements on polarised $^3$He.


title:
Observation of Cabibbo-suppressed and W-exchange Lambda_c^+ baryon
  decays

abstract:
  We present measurements of the Cabibbo-suppressed decays Lambda_c^+ -->
Lambda0 K+ and Lambda_c^+ --> Sigma0 K+ (both first observations), Lambda_c^+
--> Sigma+ K+ pi- (seen with large statistics for the first time), Lambda_c^+
--> p K+ K- and Lambda_c^+ --> p phi (measured with improved accuracy).
Improved branching ratio measurements for the decays Lambda_c^+ --> Sigma+ K+
K- and Lambda_c^+ --> Sigma+ phi, which are attributed to W-exchange diagrams,
are shown. We also present the first evidence for Lambda_c^+ --> Xi(1690)^0 K+
and set an upper limit on the non-resonant decay Lambda_c^+ --> Sigma+ K+ K-.
This analysis was performed using 32.6 fb^{-1} of data collected by the Belle
detector at the asymmetric e+ e- collider KEKB.


title: An Off-Axis Neutrino Beam

abstract:
  In this pedagogic note, set as problem for the reader, it is shown how the
existence of a maximum energy of a neutrino that appears at a given angle to
the direction of its parent pion leads to a useful enhancment of neutrino flux
in an off-axis beam.


title: On possibility of crystal extraction and collimation at 0.1-1 GeV

abstract:
  Bent crystal situated in a circulating beam can serve for efficient slow
extraction or active collimation of the beams. This technique, well established
at 10-1000 GeV, could be efficient also at the energies as low as 0.1-10 GeV
according to the computer simulations presented in this paper. Applications
might include halo scraping in the Spallation Neutron Source or slow extraction
from synchrotrons.


title:
Improved Direct Measurement of $A_b$ and $A_c$ at the $Z^0$ Pole Using a
  Lepton Tag

abstract:
  The parity violation parameters $A_b$ and $A_c$ of the $Zb{\bar b}$ and
$Zc\bar{c}$ couplings have been measured directly, using the polar angle
dependence of the polarized cross sections at the $Z^0$ pole. Bottom and
charmed hadrons were tagged via their semileptonic decays. Both the electron
and muon analyses take advantage of new multivariate techniques to increase the
analyzing power. Based on the 1993-98 SLD sample of 550,000 $Z^0$ decays
produced with highly polarized electron beams we measure $ A_b = 0.919 \pm
0.030_{stat} \pm 0.024_{syst} $, and $ A_c = 0.583 \pm 0.055_{stat} \pm
0.055_{syst} $.


title: The Muon Anomaly: Experiment and Theory

abstract:
  A summary is given of the present status of the theory and experiment of the
anomalous magnetic moment of the muon. A difference between predicted and
measured values is an indication of physics beyond the Standard Model. A new
experimental number has produced a value which differs from a recent Standard
Model prediction by about 1.6 standard deviations. When the new result was
first announced, the discrepancy was about 2.6 standard deviations, but
theorists have recently found an error in the sign of the largest term in the
Standard Model hadronic light-by-light contribution which reduces the
difference. Additional data are being analyzed and elements of the theory are
being scrutinized to provide, in the future, a sharper test of theory.


title: Belle B Physics Results

abstract:
  B physics results from the Belle experiment are reviewed. Precise
measurements of Cabbibo-Kobayashi-Maskawa matrix elements are made. Several
decay modes are observed which will enable us to measure the CP angles, phi_i
in channels other than B0->psi K0 modes. New rare decay modes are observed in
many channels. Particular attention is paid to the first observation of the
electroweak penguin-mediated decay.


title: New empirical fits to the proton electromagnetic form factors

abstract:
  Recent measurements of the ratio of the elastic electromagnetic form factors
of the proton, G_Ep/G_Mp, using the polarization transfer technique at
Jefferson Lab show that this ratio decreases dramatically with increasing Q^2,
in contradiction to previous measurements using the Rosenbluth separation
technique. Using this new high quality data as a constraint, we have reanalyzed
most of the world e-p elastic cross section data. In this paper, we present a
new empirical fit to the reanalyzed data for the proton elastic magnetic form
factor in the region 0 < Q^2 < 30 GeV^2. As well, we present an empirical fit
to the proton electromagnetic form factor ratio, G_Ep/G_Mp, which is valid in
the region 0.1 < Q^2 < 6 GeV^2.


title: Resonances and Exclusive Channels: an Experimenter's Summary

abstract:
  A very remarkable number of new results in the study of resonances and
exclusive channels has been presented at this conference giving fundamental
information in the understanding of strong interactions at low energies. The
first results from the new high luminosity colliders are impressive and a lot
of activity in this field is foreseen for the future. The most relevant issues
are summarized and discussed in this paper.


title: Solar Neutrino Results from the Sudbury Neutrino Observatory

abstract:
  We describe here the measurement of the flux of neutrinos created by the
decay of solar ^8B by the Sudbury Neutrino Observatory (SNO). The neutrinos
were detected via the charged current (CC) reaction on deuterium and by the
elastic scattering (ES) of electrons. The CC reaction is sensitive exclusively
to $\nu_e$'s, while the ES reaction also has a small sensitivity to
$\nu_{\mu}$'s and $\nu_{\tau}$'s.
  The flux of $\nu_e$'s from ^8B decay measured by the CC reaction rate is
$\phi^CC (\nu_e) = 1.75 \pm 0.07 (stat.)^{+0.1 2}_{-0.11} (sys.) \pm 0.05
(theor.) \times 10^6 cm^-2 s^-1$. Assuming no flavor transformation, the flux
inferred from the ES reaction rate is $\phi^ES (\nu_x)=2.39\pm 0.34 (stat.)
^{+0.16}_{-0.14} (sys.) \times 10^6 cm^-2 s^-1$.
  Comparison of $\phi^CC (\nu_e)$ to the Super-Kamiokande Collaboration's
precision value of $\phi^ES (\nu_x)$ yields a $3.3\sigma$ difference, assuming
the systematic uncertainties are normally distributed, providing evidence that
there is a non-electron flavor active neutrino component in the solar flux. The
total flux of active ^8B neutrinos is thus determined to be $5.44\pm 0.99
\times 10^6 cm^-2 s^-1$, in close agreement with the predictions of solar
models.


title: CLEO Results: B Decays

abstract:
  Measurements of many Standard Model constants are clouded by uncertainties in
nonperturbative QCD parameters that relate measurable quantities to the
underlying parton-level processes. Generally these QCD parameters have been
obtained from model calculations with large uncertainties that are difficult to
quantify. The CLEO Collaboration has taken a major step towards reducing these
uncertainties in determining the CKM matrix elements Vcb and Vub using new
measurements of the branching fraction and photon energy spectrum of B -> s
gamma decays. This report includes: the new CLEO measurements of B -> s gamma
decays, Vcb, and Vub; the first results from CLEO III data -- studies of B -> K
pi, pi pi, and K Kbar decays; mention of some other recent CLEO B decay
results; and plans for operating CESR and CLEO in the charm threshold region.


title: Progress in crystal extraction and collimation

abstract:
  Recent IHEP Protvino experiments show efficiencies of crystal-assisted slow
extraction and collimation of 85.3+-2.8%, at the intensities of the channeled
beam on the order of 10^12 proton per spill of 2 s duration. The obtained
experimental data well follows the theory predictions. We compare the
measurements against theory and outline the theoretical potential for further
improvement in the efficiency of the technique. This success is important for
the efficient use of IHEP accelerator and for implementation of
crystal-assisted collimation at RHIC and slow extraction from AGS onto E952,
now in preparation. Future applications, spanning in the energy from order of 1
GeV (scraping in SNS, slow extraction from COSY and medical accelerators) to
order of 1 TeV and beyond (scraping in Tevatron, LHC, VLHC), can benefit from
these studies.


title: An Asymmetric e+e- Collider at the psi''

abstract:
  A highly-asymmetric "psi'' factory" may be the best approach for studying D0
anti-D0 mixing.


title: Prospects for Charm CP Violation Studies in BTeV

abstract:
  The BTeV experiment at Fermilab could reconstruct >10^9 charm decays, three
orders of magnitude beyond the largest extant sample. The experiment is likely
to run during Tevatron Run II. It will have significant new-physics reach in
the areas of charm CP violation, flavor-changing neutral-current and
lepton-number-violating decays, and D0 anti-D0 mixing, and could observe direct
CP violation in Cabibbo-suppressed D decays if it occurs at the level predicted
by the Standard Model.


title: Crystal collimation experiment on 70-GeV proton accelerator

abstract:
  The first proof-of-principle experiment on "crystal collimation" was
performed with 70-GeV protons on IHEP accelerator. A bent crystal installed in
the ring as a primary element upstream of a collimator has reduced the
radiation levels downstream in the accelerator by a factor of two. The
measurements agree with Monte Carlo predictions.


title: Recent Progress on the BNL Muon g-2 Experiment

abstract:
  The status of the muon (g-2) experiment at the Brookhaven AGS is reviewed. An
accuracy of 1.3 ppm on the mu^+ anomalous magnetic moment has been achieved and
published. This result differs with the standard model prediction by about 2.5
standard deviations. A data sample with approximately seven times as much data
is being analyzed, with a result expected in early 2001.


title:
Search for Leptoquark Pairs Decaying to neutrino neutrino + jets in p
  anti-p Collisions at s**(1/2)=1.8 TeV

abstract:
  We present the results of a search for leptoquark (LQ) pairs in (85.2 +- 3.7)
pb^{-1} of p anti-p collider data collected by the D0 experiment at the
Fermilab Tevatron. We observe no evidence for leptoquark production and set a
limit on sigma(p anti-p -> LQ anti-LQ -> neutrino neutrino + jets) as a
function of the mass of the leptoquark (m_{LQ}). Assuming the decay LQ ->
neutrino q, we exclude scalar leptoquarks for m_{LQ} < 98 GeV/c^2, and vector
leptoquarks for m_{LQ} < 200 GeV/c^2 and coupling which produces the minimum
cross section, at a 95% confidence level.


title:
Test of exotic scalar and tensor interactions in K_e3 decay using
  stopped positive kaons

abstract:
  The form factors of the decay K+ --> pi0 e+ nu (K_e3) have been determined
from the comparison of the experimental and Monte Carlo Dalitz distributions
containing about 10^5 K_e3 events. The following values of the parameters were
obtained: lambda_+ = 0.0278 +- 0.0017(stat) +- 0.0015(syst), f_S/f_+(0) =
0.0040 +- 0.0160(stat) +- 0.0067(syst) and f_T/f_+(0) = 0.019 +- 0.080(stat) +-
0.038(syst). Both scalar f_S and tensor f_T form factors are consistent with
the Standard Model predictions of zero values.


title: Crystal-based approach to beam collimation in RHIC and SNS

abstract:
  Bent crystal serving as a scraper of the beam collimation system can channel
halo particles directly into the absorber. By means of computer simulations, we
analyse the capabilities of crystal technique for the beam cleaning process.
Two applications are considered: the crystal collimator now being installed
into RHIC for cleaning of the fully stripped gold ions, and a similar system
being developed for the Accumulator Ring of the Spallation Neutron Source.


title: Charm Lifetimes and Mixing

abstract:
  A review of the latest results on charm lifetimes and D-mixing is presented.
The e+e- collider experiments are now able to measure charm lifetimes quite
precisely, however comparisons with the latest results from fixed-target
experiments show that possible systematic effects could be evident. The new
D-mixing results from the B-factories have changed the picture that is
emerging. Although the new world averaged value of y_CP is now consistent with
zero, there is still a very interesting and favoured scenario if the strong
phase difference between the Doubly-Cabibbo-suppressed and the
Cabibbo-flavoured D0 -> Kpi decay is large.


title: Heavy Quark Production and Spectroscopy at HERA

abstract:
  Production of final states containing open charm and beauty quarks at HERA is
reviewed. Photoproduction (PHP) of the charm meson resonances D^*, D^0 and D_s,
as well as D^* production in the deep inelastic scattering (DIS) regime, are
measured and compared to QCD predictions. The excited charm mesons D^0_1(2420),
D^{*0}_2(2460) and D^{+-}_{s1}(2536) have been observed and the rates of charm
quarks hadronising to these mesons were extracted. A search for radially
excited charm mesons has been performed. PHP and DIS beauty cross sections are
higher than expected in next-to-leading order QCD.


title: Proton and Photon Structure

abstract:
  The increasing precision of the measurements on the proton structure and an
improved treatment of the correlated systematic experimental errors constitute
a major step forward in our understanding of the flavour decomposition of the
proton and the momentum distributions of the various flavours. Together with
theoretical progress on the next-to-next-to-leading order QCD corrections to
deep inelastic scattering processes, the proton measurements already imply a
new level of precision for the strong coupling constant alpha-s. The progress
in the measurements on the quantum fluctuations of the photon allows questions
on the universal properties of hadronic structures to be addressed.


title:
Search for R-parity Violating Supersymmetry in Dimuon and Four-Jets
  Channel

abstract:
  We present results of a search for R-parity-violating decay of the neutralino
chi_1^0, taken to be the Lightest Supersymmetric Particle. It is assumed that
this decay proceeds through one of the lepton-number violating couplings
lambda-prime_2jk (j=1,2; k=1,2,3). This search is based on 77.5 pb-1 of data,
collected by the D0 experiment at the Fermilab Tevatron in ppbar collisions at
a center of mass energy of 1.8 TeV in 1992-1995.


title: Rayleigh Scattering in Rare Gas Liquids

abstract:
  The Rayleigh scattering length has been calculated for rare-gas liquids in
the ultraviolet for the frequencies at which they luminesce. The calculations
are based on the measured dielectric constants in the gas phase, except in the
case of xenon for which measurements are available in the liquid. The
scattering length mayplace constraints on the design of some large-scale
detectors, using uv luminescence, being proposed to observe solar neutrinos and
dark matter. Rayleigh scattering in mixtures of rare-gas mixtures is also
discussed.


title: Photon-Photon and Electron-Photon Colliders with Energies Below a TeV

abstract:
  We investigate the potential for detecting and studying Higgs bosons in
$\gamma\gamma$ and $e\gamma$ collisions at future linear colliders with
energies below a TeV. Our study incorporates realistic $\gamma\gamma$ spectra
based on available laser technology, and NLC and CLIC acceleration techniques.
Results include detector simulations. We study the cases of: a) a SM-like Higgs
boson based on a devoted low energy machine with $\sqrt{s_{ee}}\le 200$ GeV; b)
the heavy MSSM Higgs bosons; and c) charged Higgs bosons in $e\gamma$
collisions.


title: Higgs Physics with a gamma gamma Collider Based on CLIC 1

abstract:
  We present the machine parameters and physics capabilities of the CLIC Higgs
Experiment (CLICHE), a low-energy $\gamma\gamma$ collider based on CLIC 1, the
demonstration project for the higher-energy two-beam accelerator CLIC. CLICHE
is conceived as a factory capable of producing around 20,000 light Higgs bosons
per year. We discuss the requirements for the CLIC 1 beams and a laser
backscattering system capable of producing a $\gamma\gamma$ total (peak)
luminosity of $2.0 (0.36) \times 10^{34}$ cm$^{-2}$s$^{-1}$ with $E_{CM}(\gamma
\gamma) \sim 115$ GeV. We show how CLICHE could be used to measure accurately
the mass, $\bar b b$, $WW$ and $\gamma \gamma$ decays of a light Higgs boson.
We illustrate how these measurements may distinguish between the Standard Model
Higgs boson and those in supersymmetric and more general two-Higgs-doublet
models, complementing the measurements to be made with other accelerators. We
also comment on other prospects in $\gamma\gamma$ and $e^- \gamma$ physics with
CLICHE.


title:
A Study of Strange Particle Production in Muon Neutrino Charged Current
  Interactions in the NOMAD Experiment

abstract:
  A study of strange particle production in muon neutrino charged current
interactions has been performed using the data from the NOMAD experiment.
Yields of neutral strange particles K0s, Lambda, AntiLambda have been measured.
Mean multiplicities are reported as a function of the event kinematic variables
Enu, W2 and Q2 as well as of the variables describing particle behaviour within
a hadronic jet: xF, z and pT2. Decays of resonances and heavy hyperons with
identified K0s and Lambda in the final state have been analyzed. Clear signals
corresponding to K*+-, Sigma*+-, Xi- and Sigma0 have been observed.


title: Searches for New Particles

abstract:
  The status of searches for new particles and new physics during the past year
at the Fermilab Tevatron, at HERA and at LEP is summarized. A discussion of the
hints for the Standard Model Higgs boson from LEP2 data is presented. Searches
for non-Standard Model Higgs bosons are also described. Many searches have been
carried out for the particles predicted by supersymmetry theories, and a
sampling of these is given. There have also been searches for flavor changing
neutral currents in the interactions of the top quark. In addition, searches
for excited leptons, leptoquarks and technicolor are summarized.


title: Search for Doubly Charged Higgs Bosons with the OPAL detector at LEP

abstract:
  A search for pair-produced doubly charged Higgs bosons has been performed
using data samples corresponding to an integrated luminosity of about 614 pb-1
collected with the OPAL detector at LEP at centre-of-mass energies between
189GeV and 209GeV. No evidence for a signal has been observed. A mass limit of
98.5GeV/c2 at the 95% confidence level has been set for the doubly charged
Higgs particle in left-right symmetric models. This is the first search for
doubly charged Higgs bosons at centre-of-mass energies larger than 91GeV.


title:
Determination of |Vcb| using the semileptonic decay \bar{B}^0 -->
  D^{*+}e^-\bar{\nu}

abstract:
  We present a measurement of the Cabibbo-Kobayashi-Maskawa (CKM) matrix
element |Vcb| using a 10.2 fb^{-1} data sample recorded at the \Upsilon(4S)
resonance with the Belle detector at the KEKB asymmetric e^+e^- storage ring.
By extrapolating the differential decay width of the \bar{B}^0 -->
D^{*+}e^-\bar{\nu} decay to the kinematic limit at which the D^{*+} is at rest
with respect to the \bar{B}^0, we extract the product of |Vcb| with the
normalization of the decay form factor F(1), |Vcb |F(1)=
(3.54+/-0.19+/-0.18)x10^{-2}, where the first error is statistical and the
second is systematic. A value of |Vcb| = (3.88+/-0.21+/-0.20+/-0.19)x10^{-2} is
obtained using a theoretical calculation of F(1), where the third error is due
to the theoretical uncertainty in the value of F(1). The branching fraction
B(\bar{B}^0 --> D^{*+}e^-\bar{\nu}) is measured to be
(4.59+/-0.23+/-0.40)x10^{-2}.


title: The ZEUS Micro Vertex Detector

abstract:
  During the HERA luminosity shutdown period 2000/01 the tracking system of the
ZEUS experiment has been upgraded with a silicon Micro Vertex Detector (MVD).
The barrel part of the detector consists of three layers of single sided
silicon strip detectors, while the forward section is composed of four wheels.
In this report we shortly present the assembly procedure and in more details
the test beam results on the spatial resolution of half modules. The first
results of a cosmic ray test are presented and the radiation monitor system is
described.


title:
Determination of the wrong sign decay rate D0 -> K+pi- and the
  sensitivity to D0-D0bar mixing

abstract:
  The D0 meson can decay to the wrong sign K+pi- state either through a doubly
Cabibbo suppressed decay or via mixing to the D0bar state followed by the
Cabibbo favoured decay D0bar -> K+ pi-. We measure the rate of wrong sign
decays relative to the Cabibbo favoured decay to (0.383 +- 0.044 +- 0.022)% and
give our sensitivity to a mixing signal.


title: Extra Dimensions and Black Hole Production

abstract:
  If nature realizes $TeV$ scale gravity, we are entering a very exciting
period in which we could be able to address, experimentally, some questions on
quantum gravity, strings, branes and other exotic aspects of the fundamental
theory of gravity. This article reviews recent development in models with Large
Extra Dimensions and Black hole production at future colliders. Experimental
results from current experiments as well as the expectation for the future
colliders are summarized.


title: In Search for Physics beyond the Standard Model at Tevatron

abstract:
  We present the most recent results of searches for physics beyond the
Standard Model using the CDF and the D$\not$O detector at the Fermilab Tevatron
Collider. All results shown correspond to analysis performed using the past
1992-1996 Fermilab Tevatron run I data (roughly 110 $pb^{-1}$ per each
experiment). In particular we report on searches for scalar top and scalar
bottom particles together with other {\it classic} Supersymmetry analysis.
Results from non Standard Model Higgs searches are also summarized.


title:
Experience of Using Multimonitor Workstations Under XFree86 4.x in
  VEPP-5 Control Room

abstract:
  Modern PC workstations often provide more CPU power than required for most
control applications. On the other hand, the screen space is always in short
supply. One possible solution is to use more PCs, but in fact we need only more
screens, not more keyboards, mice etc. PC architecture allows using more than
one videocard, and X Window protocol is also aware that there can be more than
one screen. But until release of XFree86 version 4 there was no freely
available server capable of driving multiple ``heads''. We have been using
multiheaded workstations under XFree86 in the VEPP-5 control room since early
2000 (currently 4 4-headed PCs plus several dual-headed). The ``Xinerama'' mode
(one-large-screen) is better suited for accelerator control system than
``several separate screens''. When moving to this configuration we've
encountered a number of, mainly human-related, problems, some of which required
modifications to X server Additionaly, the ``style'' of performing control has
slightly changed.


title: A Purity Monitoring System for the H1 Liquid Argon Calorimeter

abstract:
  The ionization probes used for monitoring the liquid argon purity in the H1
calorimeter are described and results of their operation in tests at CERN and
during the period 1992 to the end of 1998 at HERA are given. The high
sensitivity of the charge measurements leads to refined charge collection
models, and to the observation of a variation of the ionization yield of our
electron sources with temperature.


title: Study of reaction pi- A --> pi+pi-pi- A at VES setup

abstract:
  The results on partial wave analysis of 3pi system produced at beam momentum
36.6 GeV/c on beryllium target are presented. New method of amplitude analysis
is suggested -- extraction of largest eigenvalue of density matrix. Exotic wave
with JPC = 1-+ in rho pi system is studied in four t' regions. No narrow object
around M = 1.6 GeV is found. Unusually steep t'-dependence for pi(1300) object
is detected.


title: The precise determination of Re(epsilon'/epsilon)

abstract:
  CP violation in the neutral kaon system is known to be dominated by the
mixing of K0 and anti-K0. Direct CP violation in the 2 pion decays of neutral
kaons has been a controversial subject over the last decade. A strong
experimental effort has been devoted to the precise measurement of the direct
CP violation parameter re(epsilon'/epsilon). After 10 years of detector
development, data collection and analysis, the NA48 experiment at CERN and the
KTeV experiment at Fermilab have now established direct CP violation as a fact.
Both KTeV and NA48 use the same experimental principle, measuring the double
ratio of long lived and short lived neutral kaons to two charged and two
neutral pions. However, their experimental and analysis techniques differ in
important ways, and I will extensively discuss the two approaches. I will also
present the latest results on epsilon'/epsilon from both experiments, which
were announced just a few months ago.


title: Observation of B+ -> chi_c0 K+

abstract:
  Using a sample of $31.3 x 10^6 $B\bar{B}$ pairs collected with the Belle
detector at the Y(4S) resonance, we make the first observation of the charged B
meson decay to chi_c0 and a charged kaon. The measured branching fraction is
Br(B+ -> chi_c0 K+)=(6.0^{+2.1}_{-1.8}\pm1.1)x10^{-4}, where the first error is
statistical, and the second is systematic.


title: Electron-Positron colliders

abstract:
  An electron-positron linear collider in the energy range between 500 and 1000
GeV is of crucial importance to precisely test the Standard Model and to
explore the physics beyond it. The physics program is complementary to that of
the Large Hadron Collider. Some of the main physics goals and the expected
accuracies of the anticipated measurements at such a linear collider are
discussed. A short review of the different collider designs presently under
study is given including possible upgrade paths to the multi-TeV region.
Finally a framework is presented within which the realisation of such a project
could be achieved as a global international project.


title: Development of crystal extraction studies at the IHEP accelerator

abstract:
  The crystal extraction of 10^7 proton/s on BEC experiment facility is
described. Detailed computer analysis is made to explain the basic experimental
results. Future high-intensity efficient extraction using a short crystal is
announced.


title:
Determination of the strong coupling constant using subjet
  multiplicities in Neutral Current Deep Inelastic Scattering

abstract:
  The internal structure of the jets produced in neutral current interactions
for Q^2>125 GeV^2 has been studied using the subjet multiplicity with the ZEUS
detector at HERA. Jets are identified in the laboratory frame by applying the
longitudinally invariant k_T-cluster algorithm. Next-to-leading order QCD
calculations have been obtained and compared to the data; a good agreement has
been observed in the region where hadron-to-parton corrections are small,
E_{T,jet}> 25 GeV. In this region, the strong coupling constant is extracted
and the resulting value is alpha_s (M_Z)=0.1185 +/- 0.0016 (stat.)
^{+0.0067}_{-0.0048} (syst.) ^{+0.0089}_{-0.0071} (th.).


title:
Present status of IGEX dark matter search at Canfranc Underground
  Laboratory

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 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:
First Measurement of the Double Spin Asymmetry in $\vec{e}\vec{p}\to e'
  \pi^+ n$ in the Resonance Region

abstract:
  The double spin asymmetry in the $\vec{e}\vec{p}\to e' \pi^+ n$ reaction has
been measured for the first time in the resonance region for four-momentum
transfer $Q^2=0.35-1.5$ GeV$^2$. Data were taken at Jefferson Lab with the CLAS
detector using a 2.6 GeV polarized electron beam incident on a polarized solid
NH$_3$ target. Comparison with predictions of phenomenological models shows
strong sensitivity to resonance contributions. Helicity-1/2 transitions are
found to be dominant in the second and third resonance regions. The measured
asymmetry is consistent with a faster rise with $Q^2$ of the helicity asymmetry
$A_1$ for the $F_{15}(1680)$ resonance than expected from the analysis of the
unpolarized data.


title: Status and preliminary results of the ANAIS experiment at Canfranc

abstract:
  ANAIS (Annual Modulation with NaI's) is an experiment planned to investigate
seasonal modulation effects in the signal of galactic WIMPs using up to 107 kg
of NaI(Tl) in the Canfranc Underground Laboratory (Spain). A prototype using
one single crystal (10.7 kg) is being developed before the installation of the
complete experiment; the first results presented here show an average
background level of 1.2 counts/(keV kg day) from threshold (Ethr~4 keV) up to
10 keV.


title: Present Status of VEPP-5 Control System

abstract:
  This report concerns the present status of VEPP-5 control system. The control
system hardware consists of CAMAC blocks, a set of crate controllers based on
INMOS transputers and ICL-1900 architecture processor Odrenok, and
Pentium-based workstations. For small tasks simple serial CAMAC controllers are
used. For slow controls of power supplies the CANBUS is begun being used. The
workstations are running Linux and are connected via local net using TCP/IP.
Odrenok crate controllers are joined into other local net and are used for
control of equipment in high voltage pulse condition (klystron gallery).
Transputer crate controllers are linked directly to the server computer and are
used for high performance diagnostics (BPM). The three-level software complies
the so-called ``standard model''.


title:
Aging Studies of Large Area Proportional Chambers under High-Rate
  Irradiation with $CF_4$-based Mixtures (Part 2)

abstract:
  Experimental conditions at the HERA-B experiment impose very strong
requirements for gaseous detectors. The charged particle fluxes through the
HERA-B tracking system, varying with the radial distance R from the beam line,
are about $2 \times 10^{7}/R^{2}$ particles per second, and comparable to those
that will be encountered by LHC experiments. The severe radiation environment
of the HERA-B experiment leads to a maximum charge deposit on a wire, within
the muon detector, of 200 mC/cm per year. We report recent results of aging
studies performed by irradiating proportional wire chambers filled with
$Ar/CF_4/CH_4$ (74:20:6), $Ar/CF_4/CH_4$ (67:30:3), $Ar/CF_4/CO_2$ (65:30:5),
$Ar/CF_4$ (70:30), $CF_4/CH_4$ (90:10), $CF_4/CH_4$ (80:20) mixtures in a three
different experimental setups. The size of the irradiation zone varied in the
tests from 1 cm up to 500 cm. Our experience shows that the aging rate depends
not only on the total collected charge, but, in addition, on the mode of
operation and area of irradiation. The possible application of these results to
the construction of a large area gaseous detectors for operation in high rate
environments is presented.


title:
Aging Studies of Large Area Proportional Chambers under High-Rate
  Irradiation with $CF_4$-based Mixtures (PART 1)

abstract:
  Experimental conditions at the HERA-B experiment impose very strong
requirements for gaseous detectors. The charged particle fluxes through the
HERA-B tracking system, varying with the radial distance $R$ from the beam
line, are about $2 \times 10^{7}/R^{2}$ particles per second, and comparable to
those that will be encountered by LHC experiments. The severe radiation
environment of the HERA-B experiment leads to a maximum charge deposit on a
wire, within the muon detector, of 200 mC/cm per year. We report recent results
of aging studies performed by irradiating proportional wire chambers filled
with $Ar/CF_4/CH_4$ (74:20:6), $Ar/CF_4/CH_4$ (67:30:3), $Ar/CF_4/CO_2$
(65:30:5), $Ar/CF_4$ (70:30), $CF_4/CH_4$ (90:10), $CF_4/CH_4$ (80:20) mixtures
in a three different experimental setups. The size of the irradiation zone
varied in the tests from 1 cm up to 500 cm. Our experience shows that the aging
rate depends not only on the total collected charge, but, in addition, on the
mode of operation and area of irradiation. The possible application of these
results to the construction of a large area gaseous detectors for operation in
high rate environments is presented.


title: Diffractive phenomena

abstract:
  The most recent theoretical and experimental results in the field of
diffractive scattering are reviewed. A parallel between the two current
theoretical approaches to diffraction, the DIS picture in the Breit frame and
the dipole picture in the target frame, is given, accompanied by a description
of the models to which the data are compared. A recent calculation of the
rescattering corrections, which hints at the universality of the diffractive
parton distribution functions, is presented. The concept of generalized parton
distributions is discussed together with the first measurement of the processes
which might give access to them. Particular emphasis is given to the HERA data,
to motivate why hard diffraction in deep inelastic scattering is viewed as an
unrivalled instrument to shed light on the still obscure aspects of hadronic
interactions.


title: Heavy Flavor in Photoproduction at HERA

abstract:
  Recent results on charm and beauty photoproduction at HERA are discussed. The
perturbative QCD calculations are generally smaller than the measured cross
sections, particularly in the forward (proton) direction. The study of charm
dijet photoproduction is consistent with a significant contribution of charm
excitation processes.


title: MACRIB High efficiency - high purity hadron identification for DELPHI

abstract:
  Analysis of the data shows that hadron tags of the two standard DELPHI
particle identification packages RIBMEAN and HADSIGN are weakly correlated.
This led to the idea of constructing a neural network for both kaon and proton
identification using as input the existing tags from RIBMEAN and HADSIGN, as
well as preproccessed TPC and RICH detector measurements together with
additional dE/dx information from the DELPHI vertex detector. It will be shown
in this note that the net output is much more efficient at the same purity than
the HADSIGN or RIBMEAN tags alone. We present an easy-to-use routine performing
the necessary calculations.


title: Measurement of Br(Bbar -> D+l-nubar) and Determination of |Vcb|

abstract:
  We present a measurement of the branching fraction for the semileptonic B
decay Bbar -> D+l-nubar, where l- can be either an electron or a muon. We find
Gamma(Bbar -> D+l-nubar)= (13.79+/-0.76+/-2.51) ns^{-1}, and the resulting
branching fraction Br(Bbar -> D+l-nubar)= (2.13 +/- 0.12 +/- 0.39)%, where the
first error is statistical and the second systematic. We also investigate the
Bbar -> D+l-nubar form factor and the implications of the result for |Vcb|.
  From a fit to the differential decay distribution we obtain the rate
normalization |Vcb|F_D(1)= (4.11+/-0.44+/-0.52)x10^{-2}. Using a theoretical
calculation of F_D(1), the Cabibbo-Kobayashi-Maskawa matrix element
|Vcb|=(4.19+/-0.45+/-0.53+/-0.30)x10^{-2} is obtained, where the last error
comes from the theoretical uncertainty of F_D(1). The results are based on a
data sample of 10.2 fb^{-1} recorded at the Upsilon(4S)$ resonance with the
Belle detector at the KEKB e+e- collider.


title: Hadronic Decays of Charm

abstract:
  Recent hadronic charm decay results from fixed-target experiments are
presented. New measurements of the D0 to K-K+K-pi+ branching ratio are shown as
are recent results from Dalitz plot fits to D+ to K-K+pi+, pi+pi-pi+, K-pi+pi+,
K+pi-pi+ and D_s+ to pi+pi-pi+, K+pi-pi+. These fits include measurements of
the masses and widths of several light resonances as well as strong evidence
for the existence of two light scalar particles, the pipi resonance sigma and
the Kpi resonance kappa.


title:
Experimental investigation of high-energy photon splitting in atomic
  fields

abstract:
  The new data analysis of the experiment, where the photon splitting in the
atomic fields has been observed for the first time, is presented. This
experiment was performed at the tagged photon beam of the ROKK-1M facility at
the VEPP-4M collider. In the energy region of 120-450 MeV, the statistics of
$1.6\cdot 10^9$ photons incident on the BGO target was collected. About 400
candidates to the photon splitting events were reconstructed. Within the
attained experimental accuracy, the experimental results are consistent with
the cross section calculated exactly in an atomic field. The predictions
obtained in the Born approximation significantly differ from the experimental
results.


title: Searches for extra dimensions, gauge mediated SUSY and exotics at LEP

abstract:
  The results of searches for several type of physics beyond the Standard Model
using data from the four LEP experiments are presented. In the absence of any
excess signal events seen in the data limits are placed on the existence of
extra-dimensions, gauge mediated supersymmetry and some exotic states.


title:
Integrating Newer Technology Software Systems into the SLAC Legacy
  Control System - Two Case Histories and New CMLOG Developments

abstract:
  It has been the goal of SLAC Controls Software to offload processing from the
aging Alpha/VMS based control system onto machines that are more widely
accepted and used. An additional goal has been to provide more modern software
tools to our user community. This paper presents two software products which
satisfy those goals.


title: Direct CP Violation Searches in Charmless Hadronic B Meson Decays

abstract:
  We search for direct CP violation in charmless hadronic B decays observed in
a sample of about 22.7 million $B\bar{B}$ pairs collected with the BABAR
detector at the PEP-II asymmetric-energy $e^+e^-$ collider. We measure the
following charge asymmetries: ${\cal A}_{CP} (B^{\pm}\to\eta^\prime K^{\pm}) =
-0.11\pm 0.11\pm 0.02$, ${\cal A}_{CP} (B^{\pm}\to\omega \pi^{\pm}) =
-0.01^{+0.29}_{-0.31}\pm 0.03$, ${\cal A}_{CP} (B^{\pm}\to\phi K^{\pm}) =
-0.05\pm 0.20\pm 0.03$, ${\cal A}_{CP} (B^{\pm}\to\phi K^{*\pm}) =
-0.43^{+0.36}_{-0.30}\pm 0.06$, and ${\cal A}_{CP} (B^{0}\to\phi K^{*0}) =
0.00\pm 0.27\pm 0.03$.


title: The KLOE/DAPHNE Status Logging, Analysis and Database System

abstract:
  The KLOE experiment at the Frascati phi-factory DAPHNE, designed to measure
$\Re(\epsilon^\prime/\epsilon)$, began preliminary data taking in the Fall of
1999. A large database structure, which logs information coming from the DAPHNE
control system and the KLOE slow control and data acquisition systems, has been
developed. Data from detector monitoring, online event processing and machine
operating conditions are easily accessible for online and offline analysis by
means of Web tools and histogramming tools. The system allows powerful
real-time data correlations which are necessary for the ongoing program of
luminosity and background improvements. Data flow and handling processes are
presented.


title:
Searching for WIMP Dark Matter: The case for Germanium Ionization
  Detectors

abstract:
  An overview of the main strategies followed in the search for non-baryonic
particle dark matter in the form of WIMPs is given. To illustrate these
searches the case for Germanium ionization detectors is selected.


title:
Additives That Prevent Or Reverse Cathode Aging In Drift Chambers With
  Helium-Isobutane Gas

abstract:
  Noise and Malter breakdown have been studied at high rates in a test chamber
having the same cell structure and gas as in the BaBar drift chamber. The
chamber was first damaged by exposing it to a high source level at an elevated
high voltage, until its operating current at normal voltages was below
0.5nA/cm. Additives such as water or alcohol allowed the damaged chamber to
operate at 25 nA/cm, but when the additive was removed the operating point
reverted to the original low value. However with 0.02% to 0.05% oxygen or 5%
carbon dioxide the chamber could operate at more than 25 nA/cm, and continued
to operate at this level even after the additive was removed. This shows for
the first time that running with an O2 or CO2 additive at high ionisation
levels can cure a damaged chamber from breakdown problems.


title: Further Evidence for the Decay K+ to pi+ neutrino-antineutrino

abstract:
  Additional evidence for the rare kaon decay K+ to pi+ neutrino-antineutrino
has been found in a new data set with comparable sensitivity to the previously
reported result. One new event was observed in the pion momentum region
examined, 211<P<229 MeV/c, bringing the total for the combined data set to two.
Including all data taken, the backgrounds were estimated to contribute 0.15 pm
0.05 events. The branching ratio is B=1.57^{+1.75}_{-0.82} 10^{-10}.


title: Study of neutrino induced upgoing muons

abstract:
  An estimate of the energy of neutrino-induced muons in MACRO is provided by a
multiple Coulomb scattering measurement. The MACRO original upward-muon data
sample has been subdivided according to the reconstructed muon energy. The
results are interpreted in terms of neutrino oscillation.


title:
Optimization of the parameters in the RHIC single crystal heavy ion
  collimation

abstract:
  In the framework of the project to design and test a collimation system
prototype using bent channeling crystal for cleaning of the RHIC heavy ion beam
halo, we have studied the optimal length and bending angle of a silicon (110)
single crystal proposed to be a primary element situated upstream of the
traditional heavy amorphous collimator. Besides the matters of the channeling
and collimation efficiency, we also looked into the impact the crystal may have
on the non-channeled particles that go on circulating in the ring, so as to
reduce the momentum offset of the particles scattered of the crystal.


title: Single Event Effects in the Pixel readout chip for BTeV

abstract:
  In future experiments the readout electronics for pixel detectors is required
to be resistant to a very high radiation level. In this paper we report on
irradiation tests performed on several preFPIX2 prototype pixel readout chips
for the BTeV experiment exposed to a 200 MeV proton beam. The prototype chips
have been implemented in commercial 0.25 um CMOS processes following radiation
tolerant design rules. The results show that this ASIC design tolerates a large
total radiation dose, and that radiation induced Single Event Effects occur at
a manageable level.


title: Search for CP Violation in \tau -> K\pi\nu_\tau Decays

abstract:
  We search and find no evidence for CP violation in tau decays into the K pi
nu final state. We provide confidence limits on the imaginary part of the
coupling constant Lambda, describing a relative contribution of the CP
violating processes with respect to the Standard Model, to be -0.155 <
Im(Lambda) < 0.047 at 90% C.L.


title: The Time of Flight System of the AMS-02 Space Experiment

abstract:
  The Time-of-Flight (TOF) system of the AMS detector gives the fast trigger to
the read out electronics and measures velocity, direction and charge of the
crossing particles. The new version of the detector (called AMS-02) will be
installed on the International Space Station on March 2004. The fringing field
of the AMS-02 superconducting magnet is $1.0\div2.5$ kG where the
photomultiplers (PM) are installed. In order to be able to operate with this
residual field, a new type of PM was chosen and the mechanical design was
constrained by requiring to minimize the angle between the magnetic field
vector and the PM axis. Due to strong field and to the curved light guides, the
time resolution will be $150\div180$ ps, while the new electronics will allow
for a better charge measurement.


title: CP Violation in the B0 meson system with BaBar

abstract:
  The BABAR detector, at the PEP-II asymmetric B Factory at SLAC collected a
sample of 32 million BBbar pairs whilst operating at energies near the
Upsilon(4S) resonance between October 1999 and May 2001. An study of
time-dependent CP-violating asymmetries in events where one neutral B meson is
fully reconstructed in a final state containing charmonium produced the
measurement sin2beta = 0.59 +- 0.14 (stat) +- 0.05 (syst), which constitutes an
observation of CP violation in the B0 meson system at the 4 sigma level. Also
presented are preliminary results from a study of CP violation in the decays B0
to pi+pi- and B0 to K+pi-.


title: The physics goals of the TESLA project

abstract:
  As next generation e+e- linear collider the superconducting accelerator
project TESLA has been proposed. In this note the physics potential goals of
this project, which is highly complementary to LHC, are described.


title: Results on mixing in the D0 system from BaBar

abstract:
  With 12.3 fb-1 collected by the BaBar experiment in 2001, the mixing
parameter y = Delta(Gamma)/(2 Gamma) is determined from the ratio of the D0
lifetimes measured in the D0 --> K- pi+ and in the D0 --> K- K+ decay modes.
The preliminary result y = (-1.0 +- 2.2(stat.) +- 1.7(syst.))% is obtained.
Also presented is the status of measuring the mixing parameters y and x^2 =
[Delta(M)/Gamma]^2 from a simultaneous fit to the time evolution of the decay
time distributions of Cabibbo-favored right-sign (D0 --> K- pi+) and doubly
Cabibbo-suppressed wrong-sign (D0 --> K+ pi-) decays. The wrong-sign decay
rate, R_WS = (# WS decays)/(# RS decays) = (0.38 +- 0.04(stat.) +-
0.02(syst.))% is obtained from the fit to 23 fb-1 of BaBar data taken in 2000.


title: Redundant Arrays of IDE Drives

abstract:
  The next generation of high-energy physics experiments is expected to gather
prodigious amounts of data. New methods must be developed to handle this data
and make analysis at universities possible. We examine some techniques that use
recent developments in commodity hardware. We test redundant arrays of
integrated drive electronics (IDE) disk drives for use in offline high-energy
physics data analysis. IDE redundant array of inexpensive disks (RAID) prices
now equal the cost per terabyte of million-dollar tape robots! The arrays can
be scaled to sizes affordable to institutions without robots and used when fast
random access at low cost is important. We also explore three methods of moving
data between sites; internet transfers, hot pluggable IDE disks in FireWire
cases, and writable digital video disks (DVD-R).


title: Physics Motivations for Future CERN Accelerators

abstract:
  We summarize the physics motivations for future accelerators at CERN. We
argue that (a) a luminosity upgrade for the LHC could provide good physics
return for a relatively modest capital investment, (b) CLIC would provide
excellent long-term perspectives within many speculative scenarios for physics
beyond the Standard Model, (c) a Very Large Hadron Collider could provide the
first opportunity to explore the energy range up to about 30 TeV, (d) a
neutrino factory based on a muon storage ring would provide an exciting and
complementary scientific programme and a muon collider could be an interesting
later option.


title: Tests of hard and soft QCD with e+e- Annihilation Data

abstract:
  Experimental tests of QCD predictions for event shape distributions combining
contributions from hard and soft processes are discussed. The hard processes
are predicted by perturbative QCD calculations. The soft processes cannot be
calculated directly using perturbative QCD, they are treated by a power
correction model based on the analysis of infrared renormalons. Furthermore, an
analysis of the gauge structure of QCD is presented using fits of the colour
factors within the same combined QCD predictions.


title: Measurement of the Charm Structure Function of the Photon at LEP

abstract:
  Charm production is studied in deep-inelastic electron-photon scattering
using OPAL data at e+e- centre-of-mass energies from 183 to 209 GeV. Charm
quarks are identified by exclusive reconstruction of D* mesons. The
cross-section of D* production is measured in a restricted kinematic region,
and then extrapolated to the total charm production cross-section and the charm
structure function of the photon. For x>0.1 the measurement is well described
by Monte Carlo models and perturbative QCD calculations but for x<0.1 the
predictions are lower than the data both in the directly measured region and
after the extrapolation.


title: CP violation in the B meson system: recent experimental results

abstract:
  Recent experimental results on CP violation in the study of B meson decays
are reviewed. The emphasis is put on the recent measurements of the CP
parameter sin2beta by the BABAR and BELLE experiments at asymmetric B
factories, which establish for the first time CP violation in the B meson
system.


title: Crystal experiments on efficient beam extraction

abstract:
  Silicon crystal was channeling and extracting 70-GeV protons from the U-70
accelerator with efficiency of 85.3+-2.8% as measured for a beam of 10^12
protons directed towards crystals of 2 mm length in spills of 1-2 s duration.
The experimental data follow very well the prediction of Monte Carlo
simulations. This success is important to devise a more efficient use of the
U-70 accelerator in Protvino and provides a crucial support for implementation
of crystal-assisted collimation of gold ion beam in RHIC and slow extraction
from AGS onto E952, now in preparation at Brookhaven Nat'l Lab. Future
applications, spanning in the energy from sub-GeV (medical) to order of 1 GeV
(scraping in the SNS, extraction from COSY) to order of 1 TeV and beyond
(scraping in the Tevatron, LHC, VLHC), can benefit from these studies.


title: Magnetic Monopoles

abstract:
  We discuss the experimental situation of direct searches at accelerators for
Dirac magnetic monopoles, and in the penetrating cosmic radiation for the
superheavy magnetic monopoles predicted by GUT theories. We also discuss the
searches for intermediate mass monopoles (wich are predicted by theories in
extra dimensions), and for nuclearites and Q-balls.


title: Production of Ds** mesons in hadronic Z decays

abstract:
  The production rates of the orbitally excited Ds** mesons, Ds1 and Ds2*, are
measured with the 4.1 million hadronic Z decays recorded by the ALEPH detector
during 1991--1995. The Ds** mesons are reconstructed in the decay modes Ds1+ ->
D*+ K0, Ds1+ -> D*0 K+ and Ds2*+ -> D0 K+. The production rate of the Ds1 is
measured to be n(Z->Ds1+-)=(0.52+-0.09+-0.06)%, under the assumption that the
two considered decay modes of the Ds1 saturate the branching ratio. The
production rate of the Ds2* is determined to be
n(Z->Ds2*+-)=(0.83+-0.29+0.07-0.13)%, assuming that the branching fraction of
the decay Ds2*+ -> D0 K+ is 45%. The production rates in Z->cc and Z->bbar
decays are measured separately


title:
Search for scalar leptons in e+e- collisions at centre-of-mass energies
  up to 209GeV

abstract:
  A search for selectron, smuon and stau pair production is performed with the
data collected by the ALEPH detector at LEP at centre-of-mass energies up to
209 GeV. The numbers of candidate events are consistent with the background
predicted by the Standard Model. Final mass limits from ALEPH are reported.


title:
Search for Odderon induced contributions to exclusive Meson
  Photoproduction at HERA

abstract:
  Odderon induced contributions to exclusive photoproduction of $\pi^{\circ}$,
$f_2(1270)$ and $a_2(1320)$ have been searched for at HERA, using the
multiphoton decays of these mesons. No indication for such contributions was
found, in a kinematic region defined by the average photon-proton
centre-of-mass energy $<W> = 200 - 215$ GeV, photon virtualities $Q^2 < 0.01
$GeV$^2$ and $0.02 $GeV$^2 < |t| < 0.3 $GeV$^2$, where t is the squared
momentum transfer at the proton vertex. The measured upper limits for the cross
sections,
  $\sigma(\gamma p\to^{\hspace*{-2ex}\mathbb{O}}\pi^{\circ}N^{\ast}) < 39$ nb,
  $\sigma(\gamma p\to^{\hspace*{-2ex}\mathbb{O}} f_2(1270)X) < 16$ nb and
  $\sigma(\gamma p\to^{\hspace*{-2ex}\mathbb{O}} a_2(1320)X) < 96$ nb,
  all at 95% CL, are lower than the predictions by a theoretical model.
Exclusive photoproduction of $\omega$ and $\omega\pi^{\circ}$, in the $3\gamma$
and $5\gamma$ decay modes, is observed with the expected cross sections.


title:
Measurements of CP Violation, Mixing and Lifetimes of B Mesons with the
  BaBar Detector

abstract:
  We report the observation of CP violation in the $B^0$ meson system. Using a
novel technique for time-dependent measurements, we measure a non-zero value
for the CP-violating amplitude $\sin 2\beta$ at the 4.1 $\sigma$ level. We also
report on precision measurements of the $B^+$ and $B^0$ lifetimes and the
$B^0\bar{B}^0$ mixing frequency $\Delta m_d$ obtained with the same technique
and on a first measurement of the time-dependent CP-violating amplitude in
$B^0\to \pi^+\pi^-$ decays.


title: D0 Silicon Microstrip Tracker fro Run IIa

abstract:
  We briefly describe the production, installation and commissioning of the new
800,000 channel D0 Silicon Microstrip Tracker to be used for the 2 fb$^{-1}$ of
the Run IIa at the Tevatron.


title: Pair production of charged Higgs bosons at future linear e+e- colliders

abstract:
  In this paper, the pair production of charged Higgs bosons at possible future
e+e- linear colliders is studied. Multi-jet final states are considered and the
combinatorial, hadronic and genuine tbtb backgrounds are reduced thanks to a
kinematical fit. TeV-class and multi-TeV linear colliders are likely to be
sensitive to charged Higgs bosons with masses up to about 350 GeV and 1.0 TeV
respectively.


title: Kaon Rare Decays

abstract:
  Recent results and future prospects in the rare kaon-decay experiments at
KEK, BNL, CERN and FNAL are reviewed. Emphasis is placed on the quark flavor
dynamics in the flavor-changing neutral current processes. Experimental and
data-analysis techniques developed in the rare decay experiments are discussed.


title:
Mass Determination Method for the Right and Left Selectron Above
  Production Threshold

abstract:
  The determination of the masses of Supersymmetric particles such as the
Selectron for energies above threshold using the energy end-points method is
subject to signal deconvolution difficulties and to Standard Model and
Supersymmetric backgrounds. The important features of Right and Left Selectron
production are used to design an experimentally robust method both for
determining the Left and Right Selectron masses, the Neutralino mass and for
suppresing backgrounds. The mass resolution is an order of magnitude better
than in previous methods. Additional features, such as the determination of the
relative leptonic branching ratios of the selectron decay are present in the
method.


title: Electrodynamics at the Highest Energies

abstract:
  At very high energies, the bremsstrahlung and pair production cross sections
exhibit complex behavior due to the material in which the interactions occur.
The cross sections in dense media can be dramatically different than for
isolated atoms. This writeup discusses these in-medium effects, emphasizing how
the cross section has different energy and target density dependencies in
different regimes. Data from SLAC experiment E-146 will be presented to confirm
the energy and density scaling. Finally, QCD analogs of the electrodynamics
effects will be discussed.


title: New Results From BABAR

abstract:
  The BABAR experiment at the PEP-II asymmetric B factory at SLAC has collected
a large sample of data at the $\Upsilon(4S)$ resonance. I will summarize
BABAR's new results on CP violation, B mixing and lifetimes, and a selection of
rare B decays. In particular, I will describe in detail the measurement of the
CP violating parameter $\sin{2\beta}$; BABAR has observed CP violation in the
neutral B system finding $\sin{2\beta} = 0.59 \pm 0.14 \pm 0.05$.


title: Hadronic structure of the photon at LEP

abstract:
  Recent improvements in the analysis techniques and Monte Carlo models used in
the measurement of the hadronic structure function of the photon have lead to
much improved experimental results. Its low x behaviour was studied in various
Q^2 regions using LEP1 and LEP2 data, while its x dependence and Q^2 evolution
up to very high virtualities, as well as its charm component were studied using
the high energy and luminosity data of LEP2. These recent results will be
presented.


title:
A Combination of Preliminary Electroweak Measurements and Constraints on
  the Standard Model

abstract:
  This note presents a combination of published and preliminary electroweak
results from the four LEP collaborations and the SLD collaboration which were
prepared for the 2001 summer conferences. Averages from Z resonance results are
derived for hadronic and leptonic cross sections, the leptonic forward-backward
asymmetries, the tau polarisation asymmetries, the b-bbar and c-cbar partial
widths and forward-backward asymmetries and the q-qbar charge asymmetry. Above
the Z resonance, averages are derived for di-fermion cross sections and
forward-backward asymmetries, W-pair, Z-pair and single-W production cross
section, electroweak gauge boson couplings, W mass and width and W decay
branching ratios. For the first time, total and differential cross sections for
di-photon production are combined. The main changes with respect to the
experimental results presented in summer 2000 are updates to the Z-pole heavy
flavour results from SLD and LEP and to the W mass from LEP. The results are
compared with precise electroweak measurements from other experiments. Using a
new evaluation of the hadronic vacuum polarisation, the parameters of the
Standard Model are evaluated, first using the combined LEP electroweak
measurements, and then using the full set of electroweak results.


title:
Single-spin azimuthal asymmetry in exclusive electroproduction of pi^+
  mesons

abstract:
  A single-spin asymmetry in the distribution of exclusively produced pi^+
mesons azimuthally around the virtual photon direction relative to the lepton
scattering plane has been measured for the first time in deep-inelastic
scattering of positrons off longitudinally polarized protons. Integrated over
the experimental acceptance, the sin \phi moment of the polarization asymmetry
of the cross section is measured to be -0.18 +/- 0.05 (stat.) +/- 0.02 (syst.).
The asymmetry is also studied as a function of the relevant kinematic
variables, and its magnitude is found to grow with decreasing x and increasing
-t and vanish at t -> t_min (where x is the Bjorken scaling variable and t is
the squared four-momentum transferred to the nucleon).


title: Study of the K- -> pi0 e- nu decay

abstract:
  The decay K- -> pi0 e- nu has been studied using in-flight decays detected
with "ISTRA+" setup operating at the 25 GeV negative secondary beam of the U-70
PS. About 130K events were used for the analysis. The lambda_+ parameter of the
vector formfactor has been measured: lambda_+ = 0.0293 +- 0.0015(stat) +-
0.002(syst).
  The limits on the possible tensor and scalar couplings have been derived:
f_T/f_+(0)=-0.044 +0.059 -0.057 (stat) f_S/f_+(0)=-0.020 +0.025 -0.016 (stat)


title:
Search for Leptoquarks in Electron-Photon Scattering at sqrt(s_ee) up to
  209 GeV at LEP

abstract:
  Searches for first generation scalar and vector leptoquarks, and for squarks
in R-parity violating SUSY models with the direct decay of the squark into
Standard Model particles, have been performed using e+e- collisions collected
with the OPAL detector at LEP at e+e- centre-of-mass energies between 189 and
209 GeV. No excess of events is found over the expectation from Standard Model
background processes. Limits are computed on the leptoquark couplings for
different values of the branching ratio to electron-quark final states.


title: Production and Decay of the Lambda_c Charmed Baryon from Fermilab E791

abstract:
  Results are presented for the 500 GeV/c pion production asymmetry and
polarization of the Lambda_c (anti-Lanbda_c) charmed baryon from Fermilab
experiment E791. An analysis of the decay to the p anti-K pi final state is
described. Resonant sub-channel fractions and phases are given and possible
resonant effects in the low mass p anti-K system discussed. Significant decay
to Lambda_c --> Delta++ K- establishes for the first time the importance of a W
exchange mechanism in charmed baryon decay.


title: Results on CP Violation from Belle

abstract:
  I describe the recent measurement of the CP violating parameter $\sin 2
\phi_1 =(0.99\pm 0.14\pm 0.05)$ from the Belle experiment at KEK.


title: Physics at the B Factories

abstract:
  We review recent progress at the two $e^+ e^-$ B factories. The first
measurement of CP violation and the prospects for measuring all the angles of
the unitarity triangle are discussed.


title: Combined results on b-hadron production rates and decay properties

abstract:
  Combined results on b-hadron lifetimes, b-hadron production rates, B^0_d -
\bar{B^0_d} and B^0_S - \bar{B^0_s} oscillations, the decay width difference
between the mass eigenstates of the B^0_s - \bar{B^0_s} system, the average
number of c and \bar{c} quarks in b-hadron decays, and searches for CP
violation in the B^0_d - \bar{B-0_d} system are presented. They have been
obtained from published and preliminary measurements available in Summer 2000
from the ALEPH, CDF, DELPHI, L3, OPAL and SLD Collaborations. These results
have been used to determine the parameters of the CKM unitarity triangle.


title: Dijet photoproduction at HERA and the structure of the photon

abstract:
  The dijet cross section in photoproduction has been measured with the ZEUS
detector at HERA using an integrated luminosity of 38.6 pb$^{-1}$. The events
were required to have a virtuality of the incoming photon, $Q^2$, of less than
1 GeV$^2$ and a photon-proton centre-of-mass energy in the range $134 <
W_{\gamma p} < 277$ GeV. Each event contains at least two jets satisfying
transverse-energy requirements of $E_{T}^{\rm jet1}>14$ GeV and $E_{T}^{\rm
jet2}>11$ GeV and pseudorapidity requirements of $-1<\eta^{\rm jet1,2}<2.4$.
The measurements are compared to next-to-leading-order QCD predictions. The
data show particular sensitivity to the density of partons in the photon,
allowing the validity of the current parameterisations to be tested.


title: High-mass dijet cross sections in photoproduction at HERA

abstract:
  Dijet differential cross sections for the reaction e+p -> e+ + jet + jet + X
in the photoproduction regime have been measured with the ZEUS detector at HERA
using an integrated luminosity of 42.7 pb**{-1}. The cross sections are given
for photon-proton centre-of-mass energies in the range 134< W <277 GeV. The
differential cross sections as a function of the dijet mass, Mjj, and of the
dijet angular variables have been measured for 47 < Mjj < 160 GeV and compared
to next-to-leading-order QCD calculations. The dijet events in the region 75<
Mjj < 100 GeV have been used to derive a 95% C.L. upper limit on the cross
section for Z0 photoproduction of sigma(e+ p -> e+ Z0 X} < 5.9 pb. Upper limits
on the photoproduction of new heavy resonances decaying into two jets are also
presented for masses in the range between 60 GeV and 155 GeV.


title: Measurement of e+e- -> pi+pi- cross section with CMD-2 around rho-meson

abstract:
  The cross section of the process e+e- -> pi+pi- has been measured using about
114000 events collected by the CMD-2 detector at the VEPP-2M e+e- collider in
the center-of-mass energy range from 0.61 to 0.96 GeV. Results of the pion form
factor determination with a 0.6% systematic uncertainty are presented.
Implications for the hadronic contribution to the muon anomalous magnetic
moment are discussed.


title: Eleven Years of QCD at LEP

abstract:
  Studies of hadronic final states of $e^+e^-$ annihilations, observed at the
Large Electron Positron Collider LEP at CERN, are reviewed. The topics included
cover measurements of $\alpha_s$, hadronic event shapes and hadronisation
studies, tests of asymptotic freedom and of the non-Abelian gauge structure of
QCD, differences between quark and gluon jets, tests of power corrections and
selected results of two-photon scattering processes. The improvements obtained
at LEP are demonstrated by comparing to results from the pre-LEP era. This
article consists of a reproduction of slides presented at the LEPFest in
October 2000, supplemented by a short descriptive text and a list of relevant
references.


title: Observation of Exclusive barB --> D(*) K*- Decays

abstract:
  We report the first observation of the exclusive decays \bar B\to
D^{(*)}K^{*-}, using 9.66 x 10^{6} B\bar{B} pairs collected at the \Upsilon(4S)
with the CLEO detector. We measure the following branching fractions: {\cal
B}(B^- -> D^0 K^{*-})=(6.1 +- 1.6 +-1.7)x10^{-4}, {\cal B}(\bar{B^0} ->
D^+K^{*-})=(3.7 +- 1.5 +- 1.0) x 10^{-4}, {\cal B}(\bar{B^0} ->
D^{*+}K^{*-})=(3.8 +- 1.3 +- 0.8) x 10^{-4} and {\cal B}(B^- --> D^{*0}
K^{*-})=(7.7 +- 2.2 +- 2.6) x 10^{-4}. The \bar B ->D^*K^{*-} branching ratios
are the averages of those corresponding to the 00 and 11 helicity states. The
errors shown are statistical and systematic, respectively.


title: Measurements of the Diffractive Structure Function F2D at HERA

abstract:
  Recent measurements of the diffractive cross section in deep-inelastic
scattering at HERA are presented. The data are used to investigate the
factorisation properties of diffractive DIS and to examine its quantum
chromodynamic structure. Models based on the colour dipole approach to DIS are
also tested.


title: R&D for a CCD Vertex Detector for the High Energy Linear e+e- Collider

abstract:
  I summarise the status of the LCFI Collaboration R&D programme for a
CCD-based vertex detector for the linear collider.


title: QCD studies at the high-energy linear e+e- collider

abstract:
  I summarise the QCD programme at the high-energy linear e+e- collider, as
reported in the TESLA TDR and Linear Collider Physics Resource Book.


title: Measurement of HQET Parameters and CKM Matrix Elements

abstract:
  The determination of CKM matrix elements in the b-sector is discussed,
emphasizing the new measurements of Vub and Vcb by the CLEO collaboration.


title: Exploring the Charm Sector with CLEO-c

abstract:
  The CLEO collaboration proposes to explore the charm sector starting early
2003. It is foreseen to collect on the order of 6 million D D-bar pairs, 300000
Ds Ds-bar pairs at threshold and one billion J/psi decays. High precision charm
data will enable us to validate upcoming Lattice QCD calculations that are
expected to produce 1-3% errors for some non-perturbative QCD quantities. These
can then be used to improve the accuracy of CKM elements. The radiative J/psi
decays will be the first high statistics data set well suited for meson
spectroscopy between 1600 and 3000 MeV.


title:
Jet production in deep inelastic ep scattering at HERA and determination
  of alpha_s

abstract:
  Recent measurements of jet cross sections in neutral-current and
charged-current deep inelastic ep scattering are presented. The results of the
QCD analyses on these measurements to determine the strong coupling constant
are also reported.


title: Charm-System Tests of CPT with FOCUS

abstract:
  We discuss a search for CPT violation in neutral charm meson oscillations.
The data come from the Fermilab fixed-target experiment FOCUS. While flavor
mixing in the charm sector is predicted to be small by the standard model, it
is still possible to investigate CPT violation through study of the proper time
dependence of the asymmetry in right-sign decay rates for D0 and D0-bar. Using
present limits for D0-D0-bar mixing we infer bounds on charm CPT violation
using data from FOCUS.