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

  • Fu-Hu Liu
  • Tian Tian
  • Hong Zhao
  • Bao-Chun Li
Regular Article - Theoretical Physics

Abstract

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.

Keywords

Large Hadron Collider Transverse Momentum Baryon Number Star Collaboration Mann Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Institute of Theoretical PhysicsShanxi UniversityTaiyuanChina

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