paper

S-matrix analysis of the baryon electric charge correlation

arXiv:1710.02711 · doi:10.1016/j.physletb.2018.01.016

Abstract

We compute the correlation of the net baryon number with the electric charge () for an interacting hadron gas using the S-matrix formulation of statistical mechanics. The observable is particularly sensitive to the details of the pion-nucleon interaction, which are consistently incorporated in the current scheme via the empirical scattering phase shifts. Comparing to the recent lattice QCD studies in the -flavor system, we find that the natural implementation of interactions and the proper treatment of resonances in the S-matrix approach lead to an improved description of the lattice data over that obtained in the hadron resonance gas model.

6 pages, 2 figures, submitted to phys. lett. b

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