Under‐saturation of quarks at early stages of relativistic nuclear collisions: The hot glue initial scenario and its observable signatures. Issue 8 (November 2015)

• Record Type: Journal Article
• Authors: Stöcker, H.; Beitel, M.; Biró, T. S.; Csernai, L. P.; Gallmeister, K.; Gorenstein, M. I.; Greiner, C.; Mishustin, I. N.; Panero, M.; Raha, S.; Satarov, L. M.; Schramm, S.; Senzel, F.; Sinha, B.; Steinheimer, J.; Struckmeier, J.; Vovchenko, V.; Xu, Z.; Zhou, K.; Zhuang, P.
• Is Part Of: Astronomische Nachrichten. Volume 336:Issue 8/9(2015)
• Page Start: 744
• Page End: 748
• Publication Date: 2015-11
• Subjects: elementary particles -- glueball -- photon -- plasmas -- quark gluon; Astronomy -- Periodicals; 520.5
• DOI: 10.1002/asna.201512252
• Languages: English
• ISSNs: 0004-6337

Abstract

Abstract: The early stage of high multiplicity nuclear collisions is represented by a nearly quarkless, hot, deconfined pure gluon plasma. These new scenario should be characterized by a suppression of high p T photons and dileptons as well as by reduced baryon to meson ratios. We present the numerical results for central Pb+Pb collisions at the LHC energies by using the ideal Bjorken hydrodynamics with time‐dependent quark fugacity. It is shown that about 25 % of final total entropy is generated during the hydrodynamic evolution of chemically undersaturated quark‐gluon plasma. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)