System size and flavour dependence of chemical freeze-out temperatures in ALICE data from pp, pPb and PbPb collisions at LHC energies
System size and flavour dependence of chemical freeze-out temperatures in ALICE data from pp, pPb and PbPb collisions at LHC energies
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LHC 能量下 pp、pPb 和 PbPb 碰撞的 ALICE 数据中化学冻结温度的系统尺寸和风味依赖性
DOI:
10.1016/j.physletb.2022.137473
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发表时间:
2022
影响因子:
4.4
通讯作者:
Bellwied, René
中科院分区:
文献类型:
--
作者:
Flor, Fernando Antonio;Olinger, Gabrielle;Bellwied, René
We present the system size and flavour dependence of the chemical freeze-out temperature (T ch) at vanishing baryo-chemical potential calculated via thermal fits to experimental yields for several multiplicity classes in pp, pPb and PbPb collisions measured by ALICE. Using the Thermal-FIST Hadron Resonance Gas model package, we compare the quality of fits across various treatments of strangeness conservation under different freeze-out conditions as a function of the charged particle multiplicity density< d N ch/d η>. Additionally, we examine how the anti-hadron to pion yield ratios of light and strange baryons, as well as the ϕ meson, evolve within a flavour-dependent model. Through a unique two-temperature chemical freeze-out approach, we show that flavour dependence of T ch in a Strangeness Canonical Ensemble leads to a natural explanation of strangeness enhancement from small to large systems at LHC energies without requiring any non-equilibrium particle production at small< d N ch/d η>.
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DOI:
10.1016/j.cpc.2019.06.024
发表时间:
2019-01
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
V. Vovchenko;H. Stoecker
通讯作者:
V. Vovchenko;H. Stoecker
DOI:
10.1140/epjc/s10052-019-6661-3
发表时间:
2018
期刊:
The European Physical Journal C
影响因子:
--
作者:
M. Bluhm;M. Nahrgang
通讯作者:
M. Nahrgang
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
D. Magestro
通讯作者:
D. Magestro
影响因子:
1.1
作者:
R. Bellwied
通讯作者:
R. Bellwied
影响因子:
4.4
作者:
Borsanyi, Szabolcs;Fodor, Zoltan;Szabo, Kalman K.
通讯作者:
Szabo, Kalman K.