Enhancement of singly and multiply strangeness in p-Pb and Pb-Pb collisions at 158A GeV/c

Abstract

The idea that the reduction of the strange quark suppression in string fragmentation leads to the enhancement of strange particle yield in nucleus-nucleus collisions is applied to study the singly and multiply strange particle production in p-Pb and Pb-Pb collisions at 158A GeV/c. In this mechanism the strange quark suppression factor is related to the effective string tension, which increases in turn with the increase of the energy, of the centrality and of the mass of colliding system. The WA97 observation that the strange particle enhancement increases with the increasing of centrality and of strange quark content in multiply strange particles in Pb-Pb collisions with respect to p-Pb collisions was accounted reasonably.

arXiv comment8 pages, 3 PostScript figures, in Latex form. submitted to PRC

References in corpus (5)

• Flavor Production in Pb(160AGeV) on Pb Collisions: Effect of Color Ropes and Hadronic Rescattering
• Increase of Effective String Tension and Production of Strange Particles
• Charged Kaon and Pion Production at Midrapidity in Proton Nucleus and Sulphur Nucleus Collisions
• Production of mini-(gluon)jets and strangeness enhancement in pA and AA collisions at relativistic energies
• Strange Antibaryon Production Data and Reduction of Strangeness Suppression in Sulphur-Nucleus Collisions at 200A GeV

Cited by in corpus (1)

• Enhancement of $\varphi$ mesons in Pb+Pb collisions at 158A GeV/c