Hadron multiplicities and chemical freeze-out conditions in proton-proton and nucleus-nucleus collisions - INSPIRE

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Hadron multiplicities and chemical freeze-out conditions in proton-proton and nucleus-nucleus collisions

V. Vovchenko
(
- Frankfurt U., FIAS and
- Taras Shevchenko U.
)
,
V.V. Begun
(
- Jan Kochanowski U.
)
,
M.I. Gorenstein
(
- BITP, Kiev and
- Frankfurt U. and
- Frankfurt U., FIAS
)

Dec 25, 2015

9 pages

Published in:

Phys.Rev.C 93 (2016) 6, 064906

Published: Jun 22, 2016

e-Print:

1512.08025 [nucl-th]

DOI:

10.1103/PhysRevC.93.064906

View in:

reference search99 citations

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Abstract: (APS)

New results of the NA61/SHINE Collaboration at the CERN SPS on mean hadron multiplicities in proton-proton (p+p) interactions are analyzed within the transport models and the hadron resonance gas (HRG) statistical model. The chemical freeze-out parameters in p+p interactions and central Pb+Pb (or Au+Au) collisions are found and compared with each other in the range of the center-of-mass energy of the nucleon pair sNN=3.2–17.3 GeV. The canonical ensemble formulation of the HRG model is used to describe mean hadron multiplicities in p+p interactions and the grand canonical ensemble in central Pb+Pb and Au+Au collisions. The chemical freeze-out temperatures in p+p interactions are found to be larger than the corresponding temperatures in central nucleus-nucleus collisions.

Note:

Some misprints are corrected in the text, as well as in Fig.1(f)

25.75.-q
25.75.Dw
24.10.Pa
hadron: multiplicity
freeze-out: chemical
p p: scattering
nucleus nucleus: scattering
hadron: resonance: gas
freeze-out: temperature
model: statistical

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see also

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