Secondary phi meson peak as an indicator of QCD phase transition in ultrarelativistic heavy ion collisions

Abstract

In a previous paper, we have shown that a double phi peak structure appears in the dilepton invariant mass spectrum if a first order QCD phase transition occurs in ultrarelativistic heavy ion collisions. Furthermore, the transition temperature can be determined from the transverse momentum distribution of the low mass phi peak. In this work, we extend the study to the case that a smooth crossover occurs in the quark-gluon plasma to the hadronic matter transition. We find that the double phi peak structure still exists in the dilepton spectrum and thus remains a viable signal for the formation of the quark-gluon plasma in ultrarelativistic heavy ion collisions.

8 pages, 9 uuencoded postscript figures included, Latex, LBL-35724

References in corpus (6)

• Dilepton and photon production in the 'hot-glue' scenario
• Medium Modification to the $\Omega$-Meson Mass in the Walecka Model
• Vector Mesons in Nuclear Medium -- an Effective Lagrangian Approach --
• What can we learn from a second phi meson peak in ultrarelativistic nuclear collisions?
• Seeing the QCD phase transition with phi mesons
• Hadron widths in mixed-phase matter

Cited by in corpus (5)

• Modification of the $\varphi$-meson spectrum in nuclear matter
• Phi Meson Production in Heavy-Ion Collisions at SIS Energies
• Properties of Hadrons in the Nuclear Medium
• Properties of vector mesons at finite temperature -effective lagrangian approach-
• Relativistic heavy ion collisions --- Where are we now? Where do we go?