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Can Tsallis Distribution Fit All the Particle Spectra Produced at RHIC and LHC? (2015)

H. Zheng and Lilin Zhu

Hindawi

In: Advances in High Energy Physics

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Publication Date: 2015-07-30

Description: The Tsallis distribution has been tested to fit all the particle spectra at mid-rapidity from central events produced in d + Au, Cu + Cu, and Au + Au collisions at RHIC and p + Pb, Pb + Pb collisions at LHC. Even though there are strong medium effects in Cu + Cu and Au + Au collisions, the results show that the Tsallis distribution can be used to fit most of particle spectra in the collisions studied except in Au + Au collisions where some deviations are seen for proton and at low . In addition, as the Tsallis distribution can only fit part of the particle spectra produced in Pb + Pb collisions where is up to 20 GeV/c, a new formula with one more fitting degree of freedom is proposed in order to reproduce the entire region.

Print ISSN: 1687-7357

Electronic ISSN: 1687-7365

Topics: Physics

Published by Hindawi

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