Study of Pion Transverse Momentum Distributions in Ultra-Relativistic Heavy Ion Collisions: A USTFM Approach

Parra, Rameez Ahmad; Uddin, Saeed; Bashir, Inam-ul; Nanda, Hamid; Bashir, Waseem; Ahmad, Rabia

doi:10.1134/s1063776119070173

Cited by 1 publication

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“…Moreover, in some phenomenological models, the attractive and repulsive interactions both have been taken into account where the strength of the repulsive interaction is proportional to the net baryon number density (n). Consequently, this interaction ceases to exist for n ≅ 0 [41][42][43]. We have employed grand canonical ensemble (GCE) partition function approach to describe the properties of a gas of interacting hadronic resonances.…”

Section: Introductionmentioning

confidence: 99%

Particle Ratios in a Multicomponent Nonideal Hadron Resonance Gas

Parra

Uddin

Bashir³

et al. 2023

Advances in High Energy Physics

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We have considered formation of a multicomponent nonideal hot and dense gas of hadronic resonances in the ultrarelativistic heavy ion collisions. In the statistical thermal model approach, the equation of state (EoS) of the noninteracting ideal hadron resonance gas (IHRG) does not incorporate either the attractive part or the short-range repulsive part of the baryonic interaction. On the other hand, in the nonideal hadron resonance gas (NIHRG) model, we can incorporate these interactions using the van der Waals (VDW) type approach. Studies have been made to see its effect on the critical parameters of the quark-hadron phase transition. However, it can also lead to modifications in the calculated relative particle yields. In this paper, we have attempted to understand the effect of such van der Waals-type interactions on the relative particle yields and also studied their dependences on the system’s thermal parameters, such as the temperature and baryon chemical potential μ B . We have also taken into account the decay contributions of the heavier resonances. These results on particle ratios are compared with the corresponding results obtained from the point-like, i.e., noninteracting IHRG model. It is found that the particle ratios get modified by incorporating the van der Waals-type interactions, especially in a baryon-rich system which is expected to be formed at lower RHIC energies, SPS energies, and in the forthcoming CBM experiments due to high degree of nuclear stopping in these experiments.

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Section: Introductionmentioning

confidence: 99%