中国科学院机构知识库网格系统: Analyses of the collective properties of hadronic matter in Au-Au collisions at 54.4 GeV

中国科学院机构知识库网格

Chinese Academy of Sciences Institutional Repositories Grid

Analyses of the collective properties of hadronic matter in Au-Au collisions at 54.4 GeV

文献类型：期刊论文


作者	Waqas, M.; Peng, G.X.; Ajaz, M.; Haj Ismail, A.; Dawi, E.A.
刊名	PHYSICAL REVIEW D
出版日期	2022
卷号	106 期号:7 页码:075009
关键词	12.40.Ee 13.85.Hd 25.75.Ag 25.75.Dw 24.10.Pa freeze-out, kinetic freeze-out, temperature flow, velocity flow, transverse heavy ion, scattering particle, decoupling particle, spectrum matter, hadronic hadron, transverse momentum particle, massive entropy correlation impact parameter GeV multiplicity mass dependence peripheral Hagedorn collective
ISSN号	2470-0010
DOI	10.1103/PhysRevD.106.075009
文献子类	Article
英文摘要	We investigated the strange hadrons transverse momentum ( $p_{T}$ ) spectra in Au-Au collision at $\sqrt{s_{N N}} = 54.4 GeV$ in the framework of modified Hagedorn function with embedded flow. It is found that the model can describe the particle spectra well. We extracted the kinetic freeze-out temperature $T_{0}$ , transverse flow velocity $β_{T}$ , kinetic freeze-out volume $V$ , mean transverse momentum $⟨ p_{T} ⟩$ , the entropy parameter $n$ , and the multiplicity parameter $N_{0}$ . We reported that all these parameters increase towards the central collisions. The larger kinetic freeze-out temperature, transverse flow velocity, kinetic freeze-out volume, and the entropy parameter ( $n$ ) in central collisions compared to peripheral collisions show the early decoupling of the particles in central collisions. In addition, all the above parameters are mass dependent. The kinetic freeze-out temperature ( $T_{0}$ ), the entropy parameter $n$ , and mean transverse momentum ( $⟨ p_{T} ⟩$ ) are larger for massive particles, while the transverse flow velocity ( $β_{T}$ ), kinetic freeze-out volume ( $V$ ), and the multiplicity parameter ( $N_{0}$ ) show the opposite behavior. Larger $T_{0}$ , $n$ , and smaller $β_{T}$ as well as $V$ of the heavier particles indicate the early freeze-out of the heavier particles, while larger $⟨ p_{T} ⟩$ for the heavier particles evince that the effect of radial flow is stronger in heavier particles. The separate set of parameters for each particle shows the multiple kinetic freeze-out scenario, where the mass-dependent kinetic freeze-out volume shows the volume differential freeze-out scenario. We also checked the correlation among different parameters, which include the correlation of $T_{0}$ and $β_{T}$ , $T_{0}$ and $V$ , $β_{T}$ and $V$ , $⟨ p_{T} ⟩$ and $T_{0}$ , $⟨ p_{T} ⟩$ and $β_{T}$ , $⟨ p_{T} ⟩$ , and $V$ , $n$ and $T_{0}$ , $n$ and $β_{T}$ , and $n$ and $V$ , and they all are observed to have positive correlations with each other which validates our results.
电子版国际标准刊号	2470-0029
语种	英语
源URL	[http://ir.ihep.ac.cn/handle/311005/300155]
专题	高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Waqas, M.,Peng, G.X.,Ajaz, M.,et al. Analyses of the collective properties of hadronic matter in Au-Au collisions at 54.4 GeV[J]. PHYSICAL REVIEW D,2022,106(7):075009.
APA	Waqas, M.,Peng, G.X.,Ajaz, M.,Haj Ismail, A.,&Dawi, E.A..(2022).Analyses of the collective properties of hadronic matter in Au-Au collisions at 54.4 GeV.PHYSICAL REVIEW D,106(7),075009.
MLA	Waqas, M.,et al."Analyses of the collective properties of hadronic matter in Au-Au collisions at 54.4 GeV".PHYSICAL REVIEW D 106.7(2022):075009.

入库方式： OAI收割

来源：高能物理研究所

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