Curvature of the freeze-out line in heavy ion collisions

Bazavov, A.; Ding, H. -T.; Hegde, P.; Kaczmarek, O.; Karsch, F.; Laermann, E.; Mukherjee, Swagato; Ohno, H.; Petreczky, P.; Schmidt, C.; Sharma, S.; Soeldner, W.; Wagner, M.

doi:10.1103/PhysRevD.93.014512

Title: Curvature of the freeze-out line in heavy ion collisions

Journal Article · Thu Jan 28 00:00:00 EST 2016 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.93.014512· OSTI ID:1254818

Bazavov, A. ^[1]; Ding, H. -T. ^[2]; Hegde, P. ^[2]; Kaczmarek, O. ^[3]; Karsch, F. ^[4]; Laermann, E. ^[3]; Mukherjee, Swagato ^[5]; Ohno, H. ^[6]; Petreczky, P. ^[5]; Schmidt, C. ^[3]; Sharma, S. ^[5]; Soeldner, W. ^[7]; Wagner, M. ^[8]

Univ. of Iowa, Iowa City, IA (United States)
Central China Normal Univ., Wuhan (China)
Univ. of Bielefeld (Germany)
Univ. of Bielefeld (Germany); Brookhaven National Lab. (BNL), Upton, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Tsukuba (Japan)
Univ. of Regensburg (Germany)
Indiana Univ., Bloomington, IN (United States)

Here, we calculate the mean and variance of net-baryon number and net-electric charge distributions from quantum chromodynamics (QCD) using a next-to-leading order Taylor expansion in terms of temperature and chemical potentials. Moreover, these expansions with experimental data from STAR and PHENIX are compared, we determine the freeze-out temperature in the limit of vanishing baryon chemical potential, and, for the first time, constrain the curvature of the freeze-out line through a direct comparison between experimental data on net-charge fluctuations and a QCD calculation. We obtain a bound on the curvature coefficient, κ$^f$$$$_2$$<0.011, that is compatible with lattice QCD results on the curvature of the QCD transition line.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC00112704; AC05-00OR22725; SC0012704

OSTI ID:: 1254818

Alternate ID(s):: OSTI ID: 1236404

Report Number(s):: BNL-112232-2016-JA; PRVDAQ; KB0301020

Journal Information:: Physical Review D, Vol. 93, Issue 1; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 26 works

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Frontiers of finite temperature lattice QCD Borsányi, Szabolcs EPJ Web of Conferences, Vol. 137 https://doi.org/10.1051/epjconf/201713701006	journal	January 2017
The phase structure of QCD Schmidt, Christian; Sharma, Sayantan Journal of Physics G: Nuclear and Particle Physics, Vol. 44, Issue 10 https://doi.org/10.1088/1361-6471/aa824a	journal	August 2017
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Frontiers of finite temperature lattice QCD Borsanyi, Szabolcs arXiv https://doi.org/10.48550/arxiv.1612.06755	text	January 2016
Freezeout systematics due to the hadron spectrum Chatterjee, Sandeep; Mishra, Debadeepti; Mohanty, Bedangadas arXiv https://doi.org/10.48550/arxiv.1708.08152	text	January 2017

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