Comparing the Tsallis Distribution with and without Thermodynamical Description in p plus p Collisions

被引：74
|
作者：
Zheng, H. [1 ]
Zhu, Lilin [2 ]
机构：
[1] Ist Nazl Fis Nucl, Lab Nazl Sud, Via Santa Sofia 62, I-95123 Catania, Italy
[2] Sichuan Univ, Coll Phys Sci & Technol, Chengdu 610064, Peoples R China
来源：
ADVANCES IN HIGH ENERGY PHYSICS | 2016年 / 2016卷
关键词：
PROTON-PROTON COLLISIONS; CHARGED PIONS; TRANSVERSE-MOMENTUM; AU COLLISIONS; ROOT-S=7 TEV; NEUTRAL PION; SPECTRA; KAONS; STATISTICS;
D O I：
10.1155/2016/9632126
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We compare two types of Tsallis distribution, that is, with and without thermodynamical description, using the experimental data from the STAR, PHENIX, ALICE, and CMS Collaborations on the rapidity and energy dependence of the transverse momentum spectra in p + p collisions. Both of them can fit the particle spectra well. We show that the Tsallis distribution with thermodynamical description gives lower temperatures than the ones without it. The extra factor m(T) (transverse mass) in the Tsallis distribution with thermodynamical description plays an important role in the discrepancies between the two types of Tsallis distribution. But for the heavy particles, the choice to use m(T) or E-T (transverse energy) in the Tsallis distribution becomes more crucial.
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页数：10
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