Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies

Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies

In order to characterize the transverse momentum spectra (pT) of positive pions measured in the ALICE experiment, two thermal approaches are utilized; one is based on degeneracy of nonperfect Bose-Einstein gas and the other imposes an ad hoc finite pion chemical potential. The inclusion of missing h...

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Main Author: Abdel Nasser Tawfik
Format: Article
Language:English
Published: Hindawi Limited 2019-01-01
Series:Advances in High Energy Physics
Online Access:http://dx.doi.org/10.1155/2019/4604608
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spelling doaj-b9000790adce4d668c8d28381e2798472020-11-24T21:43:47ZengHindawi LimitedAdvances in High Energy Physics1687-73571687-73652019-01-01201910.1155/2019/46046084604608Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC EnergiesAbdel Nasser Tawfik0Nile University, Egyptian Center for Theoretical Physics, Juhayna Square of 26th-July-Corridor, 12588 Giza, EgyptIn order to characterize the transverse momentum spectra (pT) of positive pions measured in the ALICE experiment, two thermal approaches are utilized; one is based on degeneracy of nonperfect Bose-Einstein gas and the other imposes an ad hoc finite pion chemical potential. The inclusion of missing hadron states and the out-of-equilibrium contribute greatly to the excellent characterization of pion production. An excellent reproduction of these pT-spectra is achieved at μπ=0.12 GeV and this covers the entire range of pT. The excellent agreement with the experimental results can be understood as a manifestation of not-yet-regarded anomalous pion production, which likely contributes to the long-standing debate on “anomalous” proton-to-pion ratios at top RHIC and LHC energies.http://dx.doi.org/10.1155/2019/4604608
collection DOAJ
language English
format Article
sources DOAJ
author Abdel Nasser Tawfik
spellingShingle Abdel Nasser Tawfik
Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies
Advances in High Energy Physics
author_facet Abdel Nasser Tawfik
author_sort Abdel Nasser Tawfik
title Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies
title_short Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies
title_full Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies
title_fullStr Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies
title_full_unstemmed Out-Of-Equilibrium Transverse Momentum Spectra of Pions at LHC Energies
title_sort out-of-equilibrium transverse momentum spectra of pions at lhc energies
publisher Hindawi Limited
series Advances in High Energy Physics
issn 1687-7357
1687-7365
publishDate 2019-01-01
description In order to characterize the transverse momentum spectra (pT) of positive pions measured in the ALICE experiment, two thermal approaches are utilized; one is based on degeneracy of nonperfect Bose-Einstein gas and the other imposes an ad hoc finite pion chemical potential. The inclusion of missing hadron states and the out-of-equilibrium contribute greatly to the excellent characterization of pion production. An excellent reproduction of these pT-spectra is achieved at μπ=0.12 GeV and this covers the entire range of pT. The excellent agreement with the experimental results can be understood as a manifestation of not-yet-regarded anomalous pion production, which likely contributes to the long-standing debate on “anomalous” proton-to-pion ratios at top RHIC and LHC energies.
url http://dx.doi.org/10.1155/2019/4604608
work_keys_str_mv AT abdelnassertawfik outofequilibriumtransversemomentumspectraofpionsatlhcenergies
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