54.4时质子、氘和海卫一的研究 GeV

IF 1.5 4区 物理与天体物理 Q3 PHYSICS, PARTICLES & FIELDS
M. Waqas, G. Peng
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引用次数: 11

摘要

54.4时金-金(Au-Au)碰撞中质子、氘和氚的横向动量谱 利用Tsallis统计的冲击波模型对不同中心仓中的GeV进行了分析。模型结果与STAR Collaboration在特殊横向动量范围内测量的实验数据基本一致。我们从粒子的横向动量谱中提取了动力学冻结温度、横向流速和冻结体积。观察到,动力学冻结温度从中心碰撞到外围碰撞都在增加。然而,从中心碰撞到外围碰撞,横向流速和冻结体积减小。目前的工作揭示了恒星协作碰撞中质量相关的动力学冻结场景和体积差冻结场景。此外,参数表征了所产生系统的非平衡度,它从中心碰撞到外围碰撞都在增加,并随着质量的增加而增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study of Proton, Deuteron, and Triton at 54.4 GeV
Transverse momentum spectra of proton, deuteron, and triton in gold-gold (Au-Au) collisions at 54.4 GeV are analyzed in different centrality bins by the blast wave model with Tsallis statistics. The model results are approximately in agreement with the experimental data measured by STAR Collaboration in special transverse momentum ranges. We extracted the kinetic freeze-out temperature, transverse flow velocity, and freeze-out volume from the transverse momentum spectra of the particles. It is observed that the kinetic freeze-out temperature is increasing from the central to peripheral collisions. However, the transverse flow velocity and freeze-out volume decrease from the central to peripheral collisions. The present work reveals the mass dependent kinetic freeze-out scenario and volume differential freeze-out scenario in collisions at STAR Collaboration. In addition, parameter characterizes the degree of nonequilibrium of the produced system, and it increases from the central to peripheral collisions and increases with mass .
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来源期刊
Advances in High Energy Physics
Advances in High Energy Physics PHYSICS, PARTICLES & FIELDS-
CiteScore
3.40
自引率
5.90%
发文量
55
审稿时长
6-12 weeks
期刊介绍: Advances in High Energy Physics publishes the results of theoretical and experimental research on the nature of, and interaction between, energy and matter. Considering both original research and focussed review articles, the journal welcomes submissions from small research groups and large consortia alike.
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