Initial nuclear effects in the improved HIJING code and the production of charged pions, kaons and (anti)protons at STAR BES

The improved Heavy Ion Jet Interaction Generator (HIJING) code is introduced to explore possible initial nuclear effects on the bulk observables of charged pions, kaons and (anti)protons observed in Au+Au collisions at sNN=7.7, 11.5, 19.6, 27 and 39 GeV. The standard HIJING code is extended by (i) d...

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Bibliographic Details
Published in:Nuclear physics. A 2020-11, Vol.1003, p.122033, Article 122033
Main Author: Felemban, Nuha
Format: Article
Language:English
Subjects:
Bulk properties
HIJING
PYTHIA6.4
STAR BES
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Summary:The improved Heavy Ion Jet Interaction Generator (HIJING) code is introduced to explore possible initial nuclear effects on the bulk observables of charged pions, kaons and (anti)protons observed in Au+Au collisions at sNN=7.7, 11.5, 19.6, 27 and 39 GeV. The standard HIJING code is extended by (i) different baryon production mechanisms, and (ii) Regge collective cascade recipe. We find that the centrality dependence of the identified particle multiplicity dN/dy at mid-rapidity is quite sensitive to Regge cascading. The overall contribution of baryon production mechanism is shown to enhance the centrality dependence of the mixed particle ratios, K±/π± and p±/π± at
ISSN:0375-9474
DOI:10.1016/j.nuclphysa.2020.122033