title: QCD Interconnection Studies at Linear Colliders

abstract:
  Heavy objects like the W, Z and t are short-lived compared with typical
hadronization times. When pairs of such particles are produced, the subsequent
hadronic decay systems may therefore become interconnected. We study such
potential effects at Linear Collider energies.


title: Fine tunings and quark masses: Phenomenology of multiple domain theories

abstract:
  This talk describes some of the consequences for particle phenomenology of
the hypothesis that the physical parameters may vary in different domains of
the universe.


title: Meson Regge trajectories in relativistic quantum mechanics

abstract:
  A model potential for two-particle relativistic systems is investigated in
the framework of Poincare-invariant quantum mechanics (or relativistic
Hamiltonian dynamics). The potential considered allows to reduce the main
integro-differential equation of Poincare-invariant quantum mechanics to the
equation analogous to the radial equation and have analytical solution for
relativistic bound system. We discuss the possible choice of the parameters of
potential and apply our model to the description of light meson Regge
trajectories.


title:
Sudakov Logarithm Resummation for Vector Boson Production at Hadron
  Colliders

abstract:
  A complete description of W and Z boson production at high-energy colliders
requires the resummation of large Sudakov logarithms which dominate the
production at small transverse momentum. Currently there are two techniques for
performing this resummation: impact parameter space and transverse momentum
space. We argue that the latter can be formulated in a way which retains the
advantages of the former, while at the same time allowing a smooth transition
to finite order dominance at high transverse momentum.