ar X iv : h ep - p h / 02 02 17 1 v 1 1 8 Fe b 20 02 UT - 02 - 09 Higher - Dimensional QCD without the Strong CP Problem

ar X iv : h ep - p h / 02 02 17 1 v 2 2 8 M ar 2 00 2 UT - 02 - 09 Higher - Dimensional QCD without the Strong CP Problem

QCD in a five-dimensional sliced bulk with chiral extra-quarks on the boundaries is generically free from the strong CP problem. Accidental axial symmetry is naturally present except for suppressed breaking interactions, which plays a role of the Peccei-Quinn symmetry to make the strong CP phase sufficiently small.

ar X iv : h ep - p h / 02 02 09 8 v 1 1 1 Fe b 20 02 COLOR - FLAVOR ( UN - ) LOCKING

The structure of the phase diagram of strongly interacting matter at moderate densities is calculated within a 3-flavor NJL-type quark model with realistic quark masses. We focus on the influence of the selfcon-sistently determined effective strange quark mass on the color-flavor unlocking phase transition.

ar X iv : h ep - e x / 02 09 04 3 v 1 1 8 Se p 20 02 1 Elementary Hadronic Interactions at the CERN SPS

ar X iv : h ep - e x / 02 02 02 3 v 1 1 1 Fe b 20 02 RESULTS FROM HIGH ENERGY ACCELERATORS

We review some of the recent experimental results obtained at high-energy colliders with emphasis on LEP and SLC results.

ar X iv : h ep - p h / 04 02 15 8 v 1 1 6 Fe b 20 04 UCL - IPT - 04 - 02 QCD anomalies in hadronic weak decays

We consider the flavour-changing operators associated with the strong axial and trace anomalies. Their short-distance generation through penguin-like diagrams is obtained within the QCD external field formalism. Standard-model operator evolution exhibits a suppression of anomalous effects in K and B hadronic weak decays. A genuine set of dimension-eight ∆S = 1 operators is also displayed.