The Tsallis distribution in proton-proton collisions at √s=0.9 TeV at the LHC

被引：198
作者：
Cleymans, J. [1 ]
Worku, D. [1 ]
机构：
[1] Univ Cape Town, Dept Phys, UCT CERN Res Ctr, ZA-7701 Rondebosch, South Africa
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2012年 / 39卷 / 02期
关键词：
ENTROPY;
D O I：
10.1088/0954-3899/39/2/025006
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The Tsallis distribution has been used recently to fit the transverse momentum distributions of identified particles by the STAR (Abelev et al (STAR Collaboration) 2007 Phys. Rev. C 75 064901) and PHENIX (Adare et al (PHENIX Collaboration) 2011 Phys. Rev. C 83 064903) collaborations at the Relativistic Heavy Ion Collider and by the ALICE (Aamodt et al (ALICE Collaboration) 2011 Eur. Phys. J. C 71 1655) and CMS (Khachatryan et al (CMS Collaboration) 2011 J. High Energy Phys. JHEP05(2011)064) collaborations at the Large Hadron Collider. Theoretical issues are clarified concerning the thermodynamic consistency of the Tsallis distribution in the particular case of relativistic high-energy quantum distributions. An improved form is proposed for describing the transverse momentum distribution and fits are presented together with estimates of the parameter q and the temperature T.
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页数：12
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