Multi-Strange production at FAIR energy.

Abstract

Nuclear collisions at FAIR energies are envisaged to produce net-baryon densities ≈ 5 -6 times higher than the normal nuclear matter density. At such high densities, baryons start melting into their constituents, the quarks and gluons, forming a mixed or even deconfined medium. Such a state will be explored experimentally at the upcoming Facility for the Antiproton and Ion Research (FAIR). In such collisions, production of multi-strange hadrons plays a major role in investigating the characteristics of the medium. Enhanced production of strange quarks and therefore, of (anti)hyperons is believed to be an important signature of the formation of partonic medium.The yields of (anti)hyperons have been investigated in the at 40 AGeV -top FAIR SIS300 energy using the hadronic-string model (UrQMD) and hadronic and partonic modes of the transport model (AMPT). It is seen that multi-strange (anti)hyperons are very sensitive to the partonic medium and the enhancement is very dominant at FAIR energy.