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arXiv 1702.04110hep-ph
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用Tsallis分布计算$pp$碰撞中的强子谱：$\sqrt{s}$ = 5- 13000 GeV的π介子和夸克偶素

Using the Tsallis distribution for hadron spectra in $pp$ collisions: Pions and quarkonia at $\sqrt{s}$ = 5--13000 GeV

Smbat Grigoryan

备注：
15 pages, 20 figures
发表信息：
Phys. Rev. D 95, 056021 (2017)
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摘要：

基于Tsallis分布和爆轰波模型，提出了一个计算$pp$（也称高能$p\overline{p}$）碰撞中强子双微分谱$d^{2}N/dp_{T}dy$的热模型.它成功地描述了从$\sqrt{s} = 5$ GeV到LHC能区的π介子和夸克偶素（$ϕ$、$J/ψ$、$ψ(2S)$、$Υ$族）产生的实验数据。简单的参数化的$\sqrt{s}$依赖的模型参数，允许预测这些粒子在新的碰撞能量的产量。该模型也可用于π介子玻色-爱因斯坦关联的研究。

英文摘要：

A thermal model, based on the Tsallis distribution and blast-wave model, is proposed to compute hadron double-differential spectra $d^{2}N/dp_{T}dy$ in $pp$ (also high energy $p\overline{p}$) collisions. It successfully describes the available experimental data on pion and quarkonia ($ϕ$, $J/ψ$, $ψ(2S)$, $Υ$ family) production at energies from $\sqrt{s} = 5$ GeV to the LHC ones. Simple parametrizations for the $\sqrt{s}$ dependence of the model parameters are provided allowing predictions for the yields of these particles at new collision energies. The model can be used also for the pion Bose-Einstein correlation studies.

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