Study of thermal properties of the medium produced in Au+Au collisions at sNN=7.7 GeV using a thermal model

Bairathi, V.; Blaschke, D.; Bravina, L.; Brooks, W.K.; Chhabra, T.; Kabana, S.; Kuleshov, S.; Potashnikova, I.; Sagun, V.; Vitiuk, O.; Zabrodin, E.; Zherebtsova, E.

Авторы: Bairathi V., Blaschke D., Bravina L., Brooks W.K., Chhabra T., Kabana S., Kuleshov S., Potashnikova I., Sagun V., Vitiuk O., Zabrodin E., Zherebtsova E.
Журнал: International Journal of Modern Physics A
Том: 39
Номер: 28
Год издания: 2024
Издательство: World Scientific Publishing Co
Местоположение издательства: Singapore
Номер статьи: 2443009
DOI: 10.1142/s0217751x24430097
Аннотация: In this study, we examine the thermal properties of the medium formed in ultra-relativistic heavy-ion collisions at chemical freeze-out using a thermal model. We utilize experimental data on various hadron species from 0% to 5% most central Au+Au collisions at √s_NN = 7.7 GeV from the STAR BES program to analyze the thermal properties, namely, chemical freeze-out temperature, baryon chemical potential, and strangeness chemical potential. We employ a χ2minimization technique to obtain these thermal properties. Furthermore, we also obtain thermal properties with strangeness conservation condition and at zero potentials μ_B/T = μ_S/T = 0. We compare particle ratios from the thermal model with the experimental data. The thermal model describes particle ratios within ±2.5 standard deviations and χ2/NDF between 1–2. We also discuss the collision energy dependence of thermodynamic properties of the medium at freeze-out and compare results with the published STAR results and other thermal model calculations.
Добавил в систему: Забродин Евгений Евгеньевич

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