Электронный каталог

Статья

Nedorezov, E.V.
Description of Charged Particle Dependence on Transverse Momentum with Tsallis-Like Distribution : XXV International Baldin Seminar on High Energy Physics Problems «Relativistic Nuclear Physics and Quantum Chromodynamics», Dubna, September 18–23, 2023 : Materials / E.V.Nedorezov, A.S.Parvan, A.A.Aparin // Физика элементарных частиц и атомного ядра. – 2024. – Т. 55, № 4. – P. 1146. – URL: http://www1.jinr.ru/Pepan/v-55-4/53_Nedorezov_ann.pdf.

Recently, a large amount of experimental data has been collected in high energy physics for studying the properties of matter formed in ultrarelativistic heavy-ion collisions. The main interest is to study the phase diagram and localize phase transitions. We measured the thermodynamic properties of the system produced in such collisions. These parameters were obtained from the transverse momentum distributions of final particles based on several theoretical models. We used the wellknown hydrodynamic blast-wave approach based on the Boltzmann statistics as well as a new approach based on q-dual statistics, which can provide more information about the system, in particular, about its chemical potential, and measure the difference of the produced system from the classical equilibrium. We observe that the kinetic freeze-out parameters depend on collision centrality and energy. The results obtained for the blast-wave model are in agreement with the previously published results. For q-dual statistics, we can see that in peripheral collisions, the system is less equilibrated leading to an increased deviation from the classical distribution.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 343 е - Ядерные реакции с тяжелыми ионами$
Спец.(статьи,препринты) = С 326 - Квантовая теория систем из многих частиц. Квантовая статистика