We investigate the production of baryons and antibaryons in the central rapidity region of high energy nuclear collisions within the framework of the Skyrme model taking into account the effects of explicit chiral symmetry breaking. We argue that the formation of disordered chiral condensates may lead to enhanced baryonantibaryon production at low transverse momentum.

Using a hadronic model with empirical coupling constants and form factors, we have evaluated the cross sections for the production of exotic pentaquark Θ and/or Ξ 5 and Ξ−− 5 in reactions induced by photons, nucleons, pions, and kaons on nucleon targets. We have also predicted the Θ yield in relativistic heavy ion collisions using a kinetic model that takes into account both Θ production from t...

How is CP violation of low energy related to CP violation required from baryon number asymmetry ? We give an example which shows a direct link between CP violation of neutrino oscillation and baryogenesis through leptogenesis. When the sphaleron process is active, the sum of baryon number and lepton number is not a conserved quantity; d(B+L) dt = Anomaly = 0. Therefore, the evolution equation o...

We introduce a new formulation of the diquark breaking mechanism which describes with no free parameters the huge nuclear stopping observed in central nucleus-nucleus collisions. Supplemented, in the dual parton model, with strings originating from diquark–antidiquark pairs from the nucleon sea, it gives a substantial increase of hyperon and antihyperon yields from pPb to central PbPb collision...

We show that primordial nucleosynthesis in baryon inhomogeneous big-bang models can lead to significant heavy-element production while still satisfying all of the light-element abundance constraints including the low lithium abundance observed in population II stars. The parameters which admit this solution arise naturally from the process of neutrino induced inflation of baryon inhomogeneities...