TY  - JOUR
A1  - Vovchenko, Volodymyr
A1  - Gallmeister, Kai
A1  - Schaffner-Bielich, Jürgen
A1  - Greiner, Carsten
T1  - Nucleosynthesis in heavy-ion collisions at the LHC via the Saha equation
T2  - Physics Letters B
N2  - The production of light (anti-)(hyper-)nuclei in heavy-ion collisions at the LHC is considered in the framework of the Saha equation, making use of the analogy between the evolution of the early universe after the Big Bang and that of “Little Bangs” created in the lab. Assuming that disintegration and regeneration reactions involving light nuclei proceed in relative chemical equilibrium after the chemical freeze-out of hadrons, their abundances are determined through the famous cosmological Saha equation of primordial nucleosynthesis and show no exponential dependence on the temperature typical for the thermal model. A quantitative analysis, performed using the hadron resonance gas model in partial chemical equilibrium, shows agreement with experimental data of the ALICE collaboration on d, 3He, HΛ3, and 4He yields for a very broad range of temperatures at T≲155 MeV. The presented picture is supported by the observed suppression of resonance yields in central Pb–Pb collisions at the LHC. Keywords: Light (anti-)(hyper-)nuclei production, Saha equation, Partial chemical equilibrium.
KW  - Light (anti-)(hyper-)nuclei production
KW  - Saha equation
KW  - Partial chemical equilibrium
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/54442
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-544429
SN  - 1873-2445
SN  - 0370-2693
N1  - © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
VL  - 800.2020
IS  - 135131
SP  - 1
EP  - 5
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  -