Evolution of collectivity as a signal of quark gluon plasma formation in heavy ion collisions

Abstract

A measurement for studying the mass dependence of the dilepton interferometry in relativistic heavy-ion collision experiments as a tool to characterize the quark-gluon phase is proposed. In calculations involving dileptons, we show that the mass dependence of radii extracted from the virtual photon (dilepton) interferometry provide access to the development of collective flow with time. It is argued that the non-monotonic variation of HBT radii with invariant mass of the lepton pairs signals the formation of quark gluon plasma in heavy ion collisions. Our proposal of experimentally measuring the ratio, $R_{\mathrm{o}ut}/R_{\mathrm{s}ide}$ for dileptons can be used to estimate the average life times of the partonic as well as the hadronic phases.

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References in corpus (3)

• Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• QCD equation of state with 2+1 flavors of improved staggered quarks
• Evidence for radial flow of thermal dileptons in high-energy nuclear collisions

Cited by in corpus (6)

• Exploring the QCD landscape with high-energy nuclear collisions
• Elliptic flow of thermal dileptons as a probe of QCD matter
• Characterizing quark gluon plasma by dilepton interferometry
• Probing collectivity in ultra-relativistic heavy ion collision by leptons and photons
• Two Photon Correlation in Anisotropic Quark-gluon plasma (aQGP)
• Heavy lepton pair production in nucleus-nucleus collisions at LHC energy - a case study