Can Tsallis Distribution Fit All the Particle Spectra Produced at RHIC and LHC?
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 s...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2015/180491 |
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| Summary: | 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 Λ at low pT. In addition, as the Tsallis distribution can only fit part of the particle spectra produced in Pb + Pb collisions where pT is up to 20 GeV/c, a new formula with one more fitting degree of freedom is proposed in order to reproduce the entire pT region. |
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| ISSN: | 1687-7357 1687-7365 |