期刊
PHYSICAL REVIEW C
卷 106, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.106.044908
关键词
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资金
- ExtreMe Matter Institute EMMI at the GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt, Germany
- Bundesministerium fur Bildung und Forschung [2019/33/B/ST9/03059]
- NCN
- [05P21RFCA1]
This article investigates the production of light nuclei in heavy-ion collisions at extreme energies, focusing on the deuteron case. By using a Gibbs ensemble and quantum statistical approaches, the nonequilibrium evolution of the expanding fireball and correlations in the strongly interacting and hot system, including bound-state formation, are studied. The yields of deuteron production are calculated and compared with observations at the LHC.
To explain the production of light nuclei in heavy-ion collisions at extreme energies, we focus on the deuteron case. A Gibbs ensemble at chemical freeze-out is a prerequisite to investigate the nonequilibrium evolution of the expanding fireball. Quantum statistical approaches allow us to describe correlations including bound-state formation in the strongly interacting and hot system. We consider the virial approach to evaluate proton-neutron correlations. In generalization of the treatment of protons in pionic matter (pion-proton puzzle), the influence of the pion environment on deuteron-like correlations is evaluated using data for the pion-deuteron scattering phase shifts. Calculated yields for deuteron production are compared with those observed at the LHC.
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