An estimate for the location of QCD critical end point

2007/08/27 by R. Lacey, Roy A. Lacey, N. N. Ajitanand +13
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex

paper · pdf · doi:10.48550/arxiv.0708.3512

Revisions made to the format of figure 2

openalex publication_date 2007/08/27 · arxiv created 2008/05/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

It is proposed that a study of the ratio of shear viscosity to entropy density \fracηs as a function of the baryon chemical potential μ_B, and temperature T, provides a dynamic probe for the critical end point (CEP) in hot and dense QCD matter. An initial estimate from an elliptic flow excitation function gives μ^cep_B ∼ 150-180 MeV and T_cep ∼ 165 - 170 MeV for the location of the the CEP. These values place the CEP in the range for "immediate" validation at RHIC.

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