1998/07/07 by D. Yu. Peressounko, Peressounko, D. Yu., Yu. E. Pokrovsky +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9807271
Submitted to PRL
arxiv created 1998/07/07 · arxiv updated 2009/11/30
On the basis of hydrodynamic model of evolution of heavy ion collision we consider emission of π,K,η,ρ,ω,K^* mesons directly from the surface of quark-gluon plasma, with accounting of their absorption by surrounding plasma hadronic gas. We evaluate upper and lower limits on yields of these direct mesons in Pb+Pb collision at 158 AGeV (SpS) and 3150+3150 AGeV (LHC), and find, that even in the case of the lowest yield, direct η and heavier mesons dominate at LHC energy at soft pt (pt≤ 0.5 GeV/c). This enhancement of the low pt meson production can be considered as a quark-gluon plasma signature.