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


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.


Large Hadron Collider Transverse Momentum Baryon Number Star Collaboration Mann Distribution 
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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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