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arXiv · 2604.09951

$S$-matrix calculation of $BQ$ correlation at finite baryon density

Vojtech Honek·Pok Man Lo·Boris Tomasik
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Abstract

We calculate the baryon number--electric charge susceptibility at non-vanishing baryo-chemical potential within the model of hadron gas where pion-nucleon interaction is accounted for by the $S$-matrix formalism. The susceptibility is largely increased when the chemical potential grows within a phenomenologically relevant interval. The results are then evaluated along the chemical freeze-out line. We also calculate the evolution of the susceptibility in a cooling fireball by making use of the Partial Chemical Equilibrium model.

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Vojtech Honek, Pok Man Lo, Boris Tomasik. 2026-04-10. $S$-matrix calculation of $BQ$ correlation at finite baryon density. https://arxiv.org/abs/2604.09951

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