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arXiv 1802.05587hep-ph
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LHC能pp碰撞的多重数谱的Gamma和Tsallis分布

Multiplicity spectra in pp collisions at LHC energies in terms of Gamma and Tsallis distributions

S. Sharma, M. Kaur

摘要:

近年来,Tsallis统计在描述带电粒子的产生及其性质,特别是pT谱和高能粒子碰撞中的多重数等方面得到了广泛的应用。受其成功的启发,本文分析了能量范围为0.9 - 7 TeV的质子-质子碰撞在不同快度窗口的带电粒子多重性的LHC数据。对Tsallis分布、Gamma分布和移位Gamma分布进行了比较分析。在sqrt{s}=7 TeV的低快度窗口中,这些分布的不适用性是有趣的。通过确定熵指数及其与能量的关系,研究了Tsallis统计量的非广延性。用Tsallis函数外推该分析,预测了在快度窗口|y| < 1.5时sqrt{s}=14 TeV处的多重数分布。

英文摘要:

In recent years the Tsallis statistics is gaining popularity in describing charged particle produc- tion and their properties, in particular pT spectra and the multiplicities in high energy particle collisions. Motivated by its success, an analysis of the LHC data of proton-proton collisions at ener- gies ranging from 0.9 TeV to 7 TeV in different rapidity windows for charged particle multiplicities has been done. A comparative analysis is performed in terms of the Tsallis distribution, the Gamma distribution and the shifted-Gamma distribution. An interesting observation on the inapplicability of these distributions at sqrt{s}=7 TeV in the lower rapidity windows is intriguing. The non-extensive nature of the Tsallis statistics is studied by determining the entropic index and its energy depen- dence. The analysis is extrapolated to predict the multiplicity distribution at sqrt{s}=14 TeV for one rapidity window, |y| < 1.5 with the Tsallis function.

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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