New scenarios for hard-core interactions in a hadron resonance gas - INSPIRE

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New scenarios for hard-core interactions in a hadron resonance gas

L.M. Satarov
(
- Frankfurt U., FIAS and
- Kurchatov Inst., Moscow
)
,
V. Vovchenko
(
- Frankfurt U. and
- Frankfurt U., FIAS and
- Taras Shevchenko U.
)
,
P. Alba
(
- Frankfurt U., FIAS
)
,
M.I. Gorenstein
(
- BITP, Kiev and
- Frankfurt U., FIAS
)
,
H. Stoecker
(
- Darmstadt, GSI and
- Frankfurt U. and
- Frankfurt U., FIAS
)

Oct 27, 2016

13 pages

Published in:

Phys.Rev.C 95 (2017) 2, 024902

Published: Feb 7, 2017

e-Print:

1610.08753 [nucl-th]

DOI:

10.1103/PhysRevC.95.024902

View in:

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Abstract: (APS)

The equation of state of baryon-symmetric hadronic matter with hard-sphere interactions is studied. It is assumed that mesons M are pointlike, but baryons B and antibaryons B¯ have the same hard-core radius rB. Three possibilities are considered: (1) the BB and BB¯ interactions are the same; (2) baryons do not interact with antibaryons; (3) the BB¯, MB, and MB¯ interactions are negligible. By choosing the parameter rB=0.3–0.6 fm, we calculate the nucleon to pion ratio as a function of temperature and perform the fit of hadron yields measured in central Pb+Pb collisions at sNN=2.76TeV. New nontrivial effects in the interacting hadron resonance gas at temperatures 150–200 MeV are found.

Note:

30 pages, 11 figures

24.10.Pa
25.75.-q
21.65.Mn
hadron: resonance: gas
hadron: yield
matter: hadronic
yield: measured
nucleon: pair
temperature: high
equation of state

References(45)

Figures(11)

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