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Can Binary Bound States in a Strongly Coupled Quark-Gluon Plasma be observed via dileptons and photons?

Jorge Casalderrey-Solana·Edward V. Shuryak
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Abstract

Recently there was a significant change of views on physical properties and underlying dynamics of Quark-Gluon Plasma at $T=170-350 MeV$, produced in heavy ion collisions at RHIC. Instead of weakly coupled gas of quasiparticles, it is rather a liquid-like matter with multiple bound states. In this paper we discuss how one can test these ideas experimentally, using the ``penetrating probes'' and looking for certain peaks at some invariant masses. In dileptons the most promising are modified $ρ,ω$, with $M(T\approx T_c)\sim .5 GeV$ and also near zero binding at $M(T\approx (1.5-2)T_c)=1.5-2 GeV$. We also discuss the observability of peaks corresponding to scalar/pseudoscalar mesons in the two-photon channel.

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Jorge Casalderrey-Solana, Edward V. Shuryak. 2004-09-27. Can Binary Bound States in a Strongly Coupled Quark-Gluon Plasma be observed via dileptons and photons?. https://arxiv.org/abs/hep-ph/0408178

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