What can we learn from a second phi meson peak in ultrarelativistic nuclear collisions?

Abstract

The decay width of a phi meson is reduced from its vacuum value as its mass decreases in hot hadronic matter as a result of the partial restoration of chiral symmetry. This reduction is, however, cancelled by collisional broadening through the reactions $\varphi \pi \to K{K}^{\ast }$, $\varphi K\to \varphi K$, $\varphi \rho \to KK$, and $\varphi \varphi \to KK$. The resulting phi meson width in hot hadronic matter is found to be less than about 10 MeV for temperatures below 200 MeV. If hadronic matter has a strong first-order phase transition, this narrow phi meson with reduced mass will appear as a second peak in the dilepton spectrum in ultrarelativistic heavy ion collisions. We discuss use of this second phi peak to determine the transition temperature and the lifetime of the two-phase coexistence region in the case of a strong first-order phase transition. We also discuss using the peak to determine the range of temperatures over which the transition occurs in the case of a smooth but fast change in the entropy density.

9 pages (latex) plus 4 figures (included as uuencoded postscript files), CERN-TH.7037/93. Replaced because of small change in Fig. 4

References in corpus (1)

• Seeing the QCD phase transition with phi mesons

Cited by in corpus (40)

• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Signatures of Thermal Dilepton Radiation at RHIC
• Measurements of $\varphi$ meson production in relativistic heavy-ion collisions at RHIC
• Elliptic flow for phi mesons and (anti)deuterons in Au+Au collisions at sqrt(s_NN) = 200 GeV
• Production of phi mesons at mid-rapidity in sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC
• Nuclear modification factors of phi mesons in d+Au, Cu+Cu and Au+Au collisions at sqrt(S_NN)=200 GeV
• Effects of in-medium vector meson masses on low-mass dileptons from SPS heavy-ion collisions
• Phi meson mass and decay width in nuclear matter
• Collision rates for $\bboxρ$, $\bboxω$ and $\bboxϕ$ mesons at nonzero temperature
• Physics and Signatures of the Quark - Gluon Plasma
• Mass dependence of inclusive nuclear $\varphi$ photoproduction
• Hadronic scattering of charmed mesons
• Phi meson production in relativistic heavy ion collisions
• The $\varphi$ meson width in the medium from proton induced $\varphi$ production in nuclei
• Can dileptons reveal the in-medium properties of vector mesons?
• Phi meson propagation in a hot hadronic gas
• $D_{sJ}$(2317) meson production at RHIC
• Thermal photon production in high-energy nuclear collisions
• Charm meson scattering cross sections by pion and rho meson
• Collision Broadening of the Phi Meson in Baryon Rich Hadronic Matter
• Effective hadronic Lagrangian for charm mesons
• Effective mass of phi mesons at finite temperature
• Role of event multiplicity on hadronic phase lifetime and QCD phase boundary in ultrarelativistic collisions at energies available at the BNL Relativistic Heavy Ion Collider and CERN Large Hadron Collider
• Phi Mesons from a Hadronic Fireball
• Cross sections for meson-meson nonresonant reactions
• $\varphi$ meson production in the forward/backward rapidity region in Cu$+$Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Secondary phi meson peak as an indicator of QCD phase transition in ultrarelativistic heavy ion collisions
• Medium effects on phi decays to dilepton and kaon-antikaon pairs in relativistic heavy ion reactions
• Pentaquark baryon production from photon-neuteron reactions
• In medium effects on the $\varphi$ meson
• Dilepton production from resonance scattering in hot hadronic matter
• Contribution of Kaon component in viscosity and conductivity of hadronic medium
• Viscous coefficients and thermal conductivity of a $\pi KN$ gas mixture in the medium
• Hadron widths in mixed-phase matter
• Phi meson production in In-In collisions at $E_{\mathrm{lab}}$=158$A$ GeV: evidence for relics of a thermal phase
• Studying the in-medium $\varphi$ meson spectrum through kaons in proton-nucleus reactions
• Study of QGP signatures with the phi->K+K- signal in Pb-Pb ALICE events
• Probing the QGP Phase Boundary with Thermal Properties of $\varphi$ Mesons
• Strangeness production in hadronic models and recombination models
• Cross sections for inelastic $K$+$\varphi$ scattering