The Tsallis distribution at large transverse momenta

The charged particle transverse momentum ( p T ) spectra measured by the ATLAS and CMS collaborations for proton–proton collisions at s = 0.9 and 7 TeV have been studied using Tsallis thermodynamics. A thermodynamically consistent form of the Tsallis distribution is used for fitting the transverse m...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2015-09, Vol.75 (9), p.1-5, Article 430
Main Authors: Azmi, M. D., Cleymans, J.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Collisions
Collisions (Nuclear physics)
Cooperation
Elementary Particles
Energy use
Fittings
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
Spectra
String Theory
Texts
Thermodynamics
Transverse momentum
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Summary:The charged particle transverse momentum ( p T ) spectra measured by the ATLAS and CMS collaborations for proton–proton collisions at s = 0.9 and 7 TeV have been studied using Tsallis thermodynamics. A thermodynamically consistent form of the Tsallis distribution is used for fitting the transverse momentum spectra at mid-rapidity. It is found that the fits based on the proposed distribution are working over 14 orders of magnitude with p T values up to 200 GeV/c and this gives a value of χ 2 / N D F of 0.52/24 for the CMS data at 7 TeV. The values for d N d y | y = 0 as a function of center-of-mass energy obtained using a Tsallis distribution for both ATLAS and CMS data sets are presented and discussed.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-015-3629-9