Pseudorapidity distributions of charged particles in pp($\bar p$), p(d)A and AA collisions using Tsallis thermodynamics

Tao, J. Q.; Wang, M.; Zheng, H.; Zhang, W. C.; Zhu, L. L.; Bonasera, A.

doi:10.1088/1361-6471/ac1393

Title: Pseudorapidity distributions of charged particles in pp($$\bar p$$), p(d)A and AA collisions using Tsallis thermodynamics

Journal Article · Tue Sep 07 00:00:00 EDT 2021 · Journal of Physics. G, Nuclear and Particle Physics

DOI:https://doi.org/10.1088/1361-6471/ac1393· OSTI ID:1979271

Tao, J. Q. ^[1]; Wang, M. ^[1];

^[1];

^[2]; Bonasera, A. ^[3]

Shaanxi Normal University, Xi'an (China)
Sichuan University, Chengdu (China)
Texas A & M University, College Station, TX (United States); Laboratori Nazionali del Sud, INFN, Catania (Italy)

The pseudorapidity distributions of charged particles measured in p + p($$\overline{\text{p}}$$) collisions for energies ranging from $$\sqrt{{s}_{\mathrm{N}\mathrm{N}}}=23.6$$ GeV to 13 TeV and A + A collisions at RHIC and LHC are investigated in the fireball model with Tsallis thermodynamics. We assume that the rapidity axis is populated with fireballs following q-Gaussian distribution and the charged particles follow the Tsallis distribution in the fireball. We also extend the fireball model to asymmetric collision systems, i.e. d + Au collisions at $$\sqrt{{s}_{\mathrm{N}\mathrm{N}}}=200$$ GeV and p + Pb collisions at $$\sqrt{{s}_{\mathrm{N}\mathrm{N}}}=5.02$$ TeV, by taking into account the asymmetric geometry configuration. The model can fit the experimental data well for all the collision systems and centralities investigated. The collision energy and centrality dependence of the model parameters for the symmetric (asymmetric) collision system, i.e. the central position y₀ (y_0a, y_0A) and its width σ (σ_a, σ_A) of the fireball distribution, are also investigated and discussed. Furthermore, our results suggest that the fireball model with Tsallis thermodynamics can be used as a universal framework for the pseudorapidity distributions of charged particles in high energy collisions at RHIC and LHC.

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Research Organization:: Texas A & M Univ., College Station, TX (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Natural Science Foundation of China (NSFC); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: FG03-93ER40773; NA0003841; 11905120; 11947416

OSTI ID:: 1979271

Journal Information:: Journal of Physics. G, Nuclear and Particle Physics, Vol. 48, Issue 10; ISSN 0954-3899

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Pseudorapidity distributions of charged particles in pp($$\bar p$$), p(d)A and AA collisions using Tsallis thermodynamics

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