Curvature of the freeze-out line in heavy ion collisions - INSPIRE

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Curvature of the freeze-out line in heavy ion collisions

A. Bazavov
(
- Iowa U.
)
,
H.-T. Ding
(
- CCNU, Wuhan, Inst. Part. Phys. and
- Hua-Zhong Normal U., LQLP
)
,
P. Hegde
(
- CCNU, Wuhan, Inst. Part. Phys. and
- Hua-Zhong Normal U., LQLP
)
,
O. Kaczmarek
(
- Bielefeld U.
)
,
F. Karsch
(
- Bielefeld U. and
- Brookhaven
)

Sep 18, 2015

6 pages

Published in:

Phys.Rev.D 93 (2016) 1, 014512

Published: Jan 28, 2016

e-Print:

1509.05786 [hep-lat]

DOI:

10.1103/PhysRevD.93.014512

View in:

reference search44 citations

Citations per year

Abstract: (APS)

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. We compare these expansions with experimental data from STAR and PHENIX, 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, κ2f<0.011, that is compatible with lattice QCD results on the curvature of the QCD transition line.

Note:

5 pages, 2 figures

potential: chemical
freeze-out: temperature
quantum chromodynamics: lattice
curvature
lattice field theory
baryon: charge distribution
Taylor expansion
charge: fluctuation
heavy ion: colliding beams
PHENIX

References(31)

Figures(2)

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