Kaon in-medium mass and mean-field potential are calculated in isotopically symmetric pion matter at temperatures T M π to one loop of chiral perturbation theory. The results are extended to higher temperatures taking the existence of the K * (892) resonance into account and using experimental data on the πK scattering sand p-wave phase shifts. At RHIC temperatures T ∼ 170 MeV, the kaon mass co...

After a brief history of the insights gained from Kaon physics, the potential of Kaon decays for probing lepton number violation is discussed. Present tests of CTP and of Quantum Mechanics in the neutral Kaon sector are then reviewed and the potential of the Frascati Φ factory for doing incisive tests in this area is emphasized. The rest of this overview focuses on CP violating effects in the K...

Kaon production is studied within the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) model. Results are compared with experiment and with other models. The influence of the kaon potential on the kaon azimuthal distributions at SIS energies is considered. We also discuss the role of the many-body collisions at high-density phase of reaction. Strangeness production has been a hot topic of heavy-ion ...

We reexamine in the relativistic transport model the dependence of kaon yield on the nuclear equation of state in heavy ion collisions at energies that are below the threshold for kaon production from the nucleon-nucleon interaction in free space. For Au+Au collisions at 1 GeV/nucleon, we find that the kaon yield measured by the Kaos collaboration at GSI can be accounted for if a soft nuclear e...

Previously, motivation for enhanced b → sg from new flavor physics has centered on discrepancies between theory and experiment. Here two experimental hints are considered: (1) updated measurements of the charm multiplicity and B(B → Xcc̄s) at the Υ(4S) imply B(B → Xno charm) ≈ 12.4 ± 5.6%, (2) the B → KX and B → K+/K−X branching fractions are in excess of conventional B → Xc → KX yields by about...

Using a (3+1)-dimensional solution of the relativistic Euler-equations for Pb + Pb at 160 AGeV , space-time extensions of kaon emission zones are calculated from space-time densities and compared to the inverse widths of two-kaon Bose-Einstein correlation functions. The comparison shows a satisfactory agreement and it is concluded that because of the Gaussian shape of the kaon correlation funct...

Abstract The present status of Kaon physics is summarized from a theory point view. Focus laid on Δ S = 2, 1 as well rare decays, where progress has been made for instance in the case ε K and → μ + − Furthermore, several New Physics scenarios are discussed context decays other observables.

The production of K mesons in proton-nucleus collisions from 1.0 to 2.5 GeV is analyzed with respect to one-step nucleon-nucleon (NN → NYK) and two-step ∆-nucleon (∆N → KY N) or pion-nucleon (πN → KY ) production channels on the basis of a coupled-channel transport approach (CBUU) including the kaon final state interactions. The influence of momentum-dependent potentials for the nucleon, hypero...