Dileptons from the strongly-interacting Quark-Gluon Plasma within the Parton-Hadron-String-Dynamics (PHSD) approach

Abstract

Dilepton production in In+In collisions at 158 AGeV is studied within the microscopic Parton-Hadron-Strings Dynamics (PHSD) transport approach, which is based on a dynamical quasiparticle model (DQPM) matched to reproduce lattice QCD results in thermodynamic equilibrium. A comparison to the data of the NA60 Collaboration shows that the low mass dilepton spectra are well described by including a collisional broadening of vector mesons, while the spectra in the intermediate mass range are dominated by off-shell quark-antiquark annihilation in the nonperturbative QGP. In particular, the observed softening of the mT spectra at intermediate masses is reproduced.

talk given at the 21st International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2009), to be published in Nucl.Phys.A, 4 pages, 3 figures, elsarticle style

References in corpus (6)

• Parton transport and hadronization from the dynamical quasiparticle point of view
• QCD thermodynamics and confinement from a dynamical quasiparticle point of view
• NA60 results on the rho spectral function in In-In collisions
• Low mass dilepton production at ultrarelativistic energies
• NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
• Next-to-leading order vs. quark off-shellness and intrinsic k_T in the Drell-Yan process

Cited by in corpus (7)

• Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
• Dilepton production in nucleus-nucleus collisions at top SPS energy within the Parton-Hadron-String Dynamics (PHSD) transport approach
• Dilepton production in p+p, Cu+Cu and Au+Au collisions at 200 AGeV
• Dilepton production in the strongly interacting quark-gluon plasma
• Strangeness production within Parton-Hadron-String Dynamics (PHSD)
• Dilepton production from parton interactions in the early stage of relativistic heavy-ion collisions
• Dileptons from the nonequilibrium Quark-Gluon Plasma