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arXiv · 1909.02039

Quark-diquark models and baryonic fluctuations in QCD

E. Megias·E. Ruiz Arriola·L. L. Salcedo
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Abstract

We study the baryonic fluctuations of electric charge, baryon number and strangeness, by considering a realization of the Hadron Resonance Gas model in the light flavor sector of QCD. We elaborate on the idea that the susceptibilities can be saturated with excited baryonic states with a quark-diquark structure with a linearly confining interaction identical up to a constant to the quark-antiquark potential, $V_{qD}^\prime(r) = V_{q{\bar q}}^\prime(r)$. We obtain an overall good agreement with the spectrum obtained with other quark models and with lattice data for the fluctuations.

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E. Megias, E. Ruiz Arriola, L. L. Salcedo. 2019-09-04. Quark-diquark models and baryonic fluctuations in QCD. https://doi.org/10.1016/j.nuclphysbps.2019.11.023

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