Observing many body effects on lepton pair production from low mass enhancement and flow at RHIC and LHC energies

Abstract

The $\rho$ spectral function at finite temperature calculated using the real-time formalism of thermal field theory is used to evaluate the low mass dilepton spectra. The analytic structure of the $\rho$ propagator is studied and contributions to the dilepton yield in the region below the bare $\rho$ peak from the different cuts in the spectral function are discussed. The space-time integrated yield shows significant enhancement in the region below the bare $\rho$ peak in the invariant mass spectra. It is argued that the variation of the inverse slope of the transverse mass ($M_T$) distribution can be used as an efficient tool to predict the presence of two different phases of the matter during the evolution of the system. Sensitivity of the effective temperature obtained from the slopes of the $M_T$ spectra to the medium effects are studied.

References in corpus (14)

• Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV
• Centrality dependence of charged hadron and strange hadron elliptic flow from sqrt(s_NN) = 200 GeV Au+Au collisions
• Common Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Comprehensive Interpretation of Thermal Dileptons at the SPS
• QCD equation of state with 2+1 flavors of improved staggered quarks
• Evidence for radial flow of thermal dileptons in high-energy nuclear collisions
• Low Mass Dimuons Produced in Relativistic Nuclear Collisions
• Low mass dilepton production at ultrarelativistic energies
• Dimuon transverse momentum spectra as a tool to characterize the emission region in heavy-ion collisions
• Meson loops in the $f_0(980)$ and $a_0(980)$ radiative decays into $\rho$, $\omega$
• Real-time propagators at finite temperature and chemical potential
• Dilepton flow and deconfinement phase transition in heavy ion collisions
• Transverse momentum spectra of dileptons at NA60
• Theory and Phenomenology of Vector Mesons in Medium

Cited by in corpus (13)

• Electrical conductivity of hadronic matter from different possible mesonic and baryonic thermal fluctuations
• Effect of spectral modification of $\rho$ on shear viscosity of a pion gas
• Holographic phase diagram of quark-gluon plasma formed in heavy-ions collisions
• Di-electron production from vector mesons with medium modifications in heavy ion collisions
• Elliptic flow of thermal dileptons as a probe of QCD matter
• In-medium vector mesons and low mass lepton pairs from heavy ion collisions
• Dimuon production from in-medium rho decays from QCD sum rules
• Analysis of $\omega$ self-energy at finite temperature and density in the real-time formalism
• Low-mass dilepton production through transport process in quark-gluon plasma
• Kelvin-Helmholz instability in high energy heavy ion collisions
• The $\rho$ meson in hot hadron matter and low mass dilepton spectra
• Dilepton creation based on an analytic hydrodynamic solution
• Probing collectivity in ultra-relativistic heavy ion collision by leptons and photons