On the precise determination of the Tsallis parameters in proton–proton collisions at LHC energies. (16th March 2018)

• Record Type: Journal Article
• Authors: Bhattacharyya, T; Cleymans, J; Marques, L; Mogliacci, S; Paradza, M W
• Is Part Of: Journal of physics. Volume 45:Number 5(2018:May)
• Publication Date: 2018-03-16
• Subjects: transverse -- momentum -- Tsallis -- non-extensive -- statistics -- Tsallis pT distributions LHC; 12.38.Aw -- 13.60.Le -- 14.40.Lb -- 14.40.Nd; Nuclear physics -- Periodicals; Particles (Nuclear physics) -- Periodicals; Physique nucléaire -- Périodiques; Particules (Physique nucléaire) -- Périodiques; Kernfysica; Elementaire deeltjes; 539.7
• DOI: 10.1088/1361-6471/aaaea0
• Languages: English
• ISSNs: 0954-3899

Abstract

Abstract: A detailed analysis is presented of the precise values of the Tsallis parameters obtained in p – p collisions for identified particles, pions, kaons and protons at the LHC at three beam energies s = 0.9, 2.76 and 7 TeV. Interpolated data at s = 5.02 TeV have also been included. It is shown that the Tsallis formula provides reasonably good fits to the p T distributions in p – p collisions at the LHC using three parameters d N /d y, T and q . However, the parameters T and q depend on the particle species and are different for pions, kaons and protons. As a consequence there is no m T scaling and also no universality of the parameters for different particle species.