Quenched lattice data for the QQ̄ interaction (in terms of heavy quark free energies) in the color singlet channel at finite temperatures are fitted and used within the nonrelativistic Schrödinger equation formalism to obtain binding energies and scattering phase shifts for the lowest eigenstates in the charmonium and bottomonium systems in a hot gluon plasma. The partial dissociation rate due t...

A relatively clean environment and well-understood initial state parton content render e+e− colliding beams experiments ideal for both the qualitative confirmation and quantitative testing of Quantum Chromodynamics. Through the years, a number of seminal discoveries and measurements performed at e+e− colliding beam facilities have served to establish the color-charge-based SU(3) gauge theory hy...

In most of the models of hadronic collisions the number of exchanged colour strings grows with energy and atomic numbers of the projectile and target. At high string densities interaction between them becomes important, which should melt them into the quark-gluon plasma state in the end. It is shown that under certain reasonable assumptions about the the string interaction, a phase transition t...

In most of the models of hadronic collisions the number of exchanged colour strings grows with energy and atomic numbers of the projectile and target. At high string densities interaction between them becomes important, which should melt them into the quark-gluon plasma state in the end. It is shown that under certain reasonable assumptions about the the string interaction, a phase transition t...

We review the first round of QCD studies at the c+ ecollider LEP, which started operating towards the end of last year. These studies at the peak of the 2’ resonance have proven to be extremely rewarding, not only because of the large statistics available due to the high resonance cross section, but also because of the higher centre of mass energy, which allows a much cleaner study of events wi...

We study dynamical mass generation in pure Yang-Mills theory and report on a recently developed ansatz that exactly solves the tower of Dyson-Schwinger equations in Landau gauge at low Euclidean momentum, featuring enhanced gluon-gluon vertices, a finite ghost-gluon vertex in agreement with an old argument of Taylor, and an IR suppressed gluon propagator. This ansatz reinforces arguments in fav...