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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1802.07972hep-phnucl-th
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$\sqrt{s_{NN}} $ = 5.02 TeV p-Pb碰撞的热模型描述

Thermal Model Description of p--Pb Collisions at $\sqrt{s_{NN}} $ = 5.02 TeV

Natasha Sharma, Jean Cleymans, Lokesh Kumar

摘要:

在热模型下,利用正则方法和奇异度守恒,研究了$\sqrt{s_{NN}} $ = 5.02 TeV的$p-Pb$碰撞中轻味强子产生的ALICE数据.的化学冻结温度是独立的中心性,除了最低的多重bin,与接近160兆电子伏的值,但在$\sqrt{s_{NN}}$ = 2.76 TeV的$Pb-Pb$碰撞得到的一致。奇异非平衡因子$γ_s$的值随着多重性从0.9缓慢增加到0.96,即它总是非常接近完全化学平衡。

英文摘要:

The ALICE data on light flavor hadron production obtained in $p-Pb$ collisions at $\sqrt{s_{NN}} $ = 5.02 TeV are studied in the thermal model using the canonical approach with exact strangeness conservation. The chemical freeze-out temperature is independent of centrality except for the lowest multiplicity bin, with values close to 160 MeV but consistent with those obtained in $Pb-Pb$ collisions at $\sqrt{s_{NN}}$ = 2.76 TeV. The value of the strangeness non-equilibrium factor $γ_s$ is slowly increasing with multiplicity from 0.9 to 0.96, i.e. it is always very close to full chemical equilibrium.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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