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Excitation Functions of Related Parameters from Transverse Momentum (Mass) Spectra in High-Energy Collisions
Advances in High Energy Physics ( IF 1.5 ) Pub Date : 2020-06-10 , DOI: 10.1155/2020/5356705
Li-Li Li 1 , Fu-Hu Liu 1 , Muhammad Waqas 1 , Rasha Al-Yusufi 1, 2 , Altaf Mujear 1, 2
Affiliation  

Transverse momentum (mass) spectra of positively and negatively charged pions and of positively and negatively charged kaons, protons, and antiprotons produced at mid-(pseudo)rapidity in various collisions at high energies are analyzed in this work. The experimental data measured in central gold-gold, central lead-lead, and inelastic proton-proton collisions by several international collaborations are studied. The (two-component) standard distribution is used to fit the data and extract the excitation function of effective temperature. Then, the excitation functions of kinetic freeze-out temperature, transverse flow velocity, and initial temperature are obtained. In the considered collisions, the four parameters increase with the increase of collision energy in general, and the kinetic freeze-out temperature appears at the trend of saturation at the top Relativistic Heavy Ion Collider and the Large Hadron Collider.

中文翻译:

高能碰撞中横向动量(质谱)相关参数的激发函数

在这项工作中,分析了在高能量下各种碰撞中,在(假)快度中产生的带正电和带负电的介子以及带正电和带负电的钾,质子和反质子的横向动量(质量)谱。研究了由几个国际合作机构在中心金-金,中心铅-铅和非弹性质子-质子碰撞中测得的实验数据。(两成分)标准分布用于拟合数据并提取有效温度的激励函数。然后,获得了动态冻结温度,横向流速和初始温度的激发函数。在考虑的碰撞中,四个参数通常随着碰撞能量的增加而增加,
更新日期:2020-06-10
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