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arXiv · hep-ph/9806219

Signatures of the Tricritical Point in QCD

M. Stephanov·K. Rajagopal·E. Shuryak
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Abstract

Several approaches to QCD with two massless quarks at finite temperature T and baryon chemical potential mu suggest the existence of a tricritical point on the boundary of the phase with spontaneously broken chiral symmetry. In QCD with massive quarks there is then a critical point at the end of a first order transition line. We discuss possible experimental signatures of this point, which provide information about its location and properties. We propose a combination of event-by-event observables, including suppressed fluctuations in T and mu and, simultaneously, enhanced fluctuations in the multiplicity of soft pions.

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M. Stephanov, K. Rajagopal, E. Shuryak. 1999-03-09. Signatures of the Tricritical Point in QCD. https://doi.org/10.1103/physrevlett.81.4816

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