Study of strange particle pT spectra in relativistic heavy-ion collisions with blast-wave model

被引：3
作者：
Ristea, Oana [1 ]
Ristea, Catalin [2 ]
Jipa, Alexandru [1 ]
机构：
[1] Univ Bucharest, Fac Phys, Bucharest, Romania
[2] Inst Space Sci, Bucharest, Romania
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2022年 / 31卷 / 09期
关键词：
Relativistic heavy-ion collisions; strangeness production; collective flow; BARYONIC MATTER EXPERIMENT; PB-PB COLLISIONS; FREEZE-OUT; CHALLENGES;
D O I：
10.1142/S0218301322500902
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Boltzmann Gibbs blast-wave model was used to analyze the transverse momentum distributions of strange hadrons (K+, K-, K-S(0), Lambda, (Lambda) over bar, Xi(-), Xi(+), phi, Omega(-), and (Omega) over bar+) produced in most central A u+Au collisions at RHIC-BES energies. The kinetic freeze-out parameters for energies root s(NN) = 7.7, 11.5, 19.6, 27 and 39 GeV are presented and discussed as a function of collision energy. The K+, K-, K-S(0), Lambda, (Lambda) over bar, Xi(-), Xi(+), phi, Omega(-), and (Omega) over bar+) BGBW fit results are similar within errors with the kinetic freeze-out parameters of bulk hadrons (pi(+/-), K-+/-, p and (p) over bar). The multi-strange kinetic freeze-out parameters indicate that these hadrons tend to decouple earlier from the system than the bulk hadrons, having a smaller average transverse flow velocity.
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页数：15
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