Phi Mesons from a Hadronic Fireball

Details Phi Mesons from a Hadronic Fireball Phi Mesons from a Hadronic Fireball

2001-07-27

arxiv.org/abs/hep-ph/0107288v1

Phys.Rev. C64 (2001) 054905

Physics

High Energy Physics

High Energy Physics - Phenomenology

style Revtex4,9 pages, 5 figures. submitted to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.64.054905

Production of $\phi$ mesons is considered in the course of heavy-ion collisions at SPS energies. We investigate the possible difference in momentum distributions of $\phi$ mesons measured via their leptonic ($\mu^+\mu^-$) and hadronic ($K^+K^-$) decays. Rescattering of secondary kaons in the dense hadron gas together with the influence of in-medium kaon potential can lead to a relative decrease of a $\phi$ yield observed in the hadronic channel. We analyze how the in-medium modifications of meson properties affect apparent - reconstructed momentum distributions of $\phi$ mesons. Quantitative results are presented for central Pb+Pb collisions at $E_{beam}=158 GeV/A$.

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