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Extracting chemical potentials of quarks from ratios of negatively/positively charged particles in high-energy collisions

The European Physical Journal A, 2014, Vol.50(3), pp.1-8 [Peer Reviewed Journal]

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  • Title:
    Extracting chemical potentials of quarks from ratios of negatively/positively charged particles in high-energy collisions
  • Author: Liu, Fu-Hu ; Tian, Tian ; Zhao, Hong ; Li, Bao-Chun
  • Found In: The European Physical Journal A, 2014, Vol.50(3), pp.1-8 [Peer Reviewed Journal]
  • Subjects: Physics ; Nuclear Physics, Heavy Ions, Hadrons ; Particle and Nuclear Physics ; Nuclear Fusion ; Physics
  • Language: English
  • Description: The transverse momentum spectrums of π − , π + , K − , K + , bar p , and p produced in p -Pb collisions at sqrt {s_{NN} } = 5.02 TeV measured by the CMS Collaboration and in Pb-Pb collisions at sqrt {s_{NN} } = 2.76 TeV measured by the ALICE Collaboration are described by the Tsallis distribution. Then, the ratios of negatively/positively charged particles are obtained. The chemical potentials of u -quark, d -quark, s -quark, baryon number, isospin, and strangeness are obtained by using different configurations of the ratios. Comparing with the masses of final-state particles, all the six types of chemical potentials are small.
  • Identifier: ISSN: 1434-6001 ; E-ISSN: 1434-601X ; DOI: 10.1140/epja/i2014-14062-5

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