High baryon densities achievable in the fragmentation regions at RHIC and LHC

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Abstract

We use the McLerran-Venugopalan model of the glasma energy-momentum tensor to compute the rapidity loss and excitation energy of the colliding nuclei in the fragmentation regions followed by a space-time picture to obtain their energy and baryon densities. At the top RHIC energy we find baryon densities up to 3 baryons/fm3, which is 20 times that of atomic nuclei. Assuming the formation of quark-gluon plasma, we find initial temperatures of 200 to 300 MeV and baryon chemical potentials of order 1 GeV. Assuming a roughly adiabatic expansion it would imply trajectories in the T - μ plane which would straddle a possible critical point.

Original languageEnglish (US)
Article number012077
JournalJournal of Physics: Conference Series
Volume779
Issue number1
DOIs
StatePublished - Feb 8 2017
Event16th International Conference on Strangeness in Quark Matter, SQM 2016 - Berkeley, United States
Duration: Jun 27 2016Jul 1 2016

Bibliographical note

Funding Information:
This work was supported by the U.S. Department of Energy grant DE-FG02-87ER40328.

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