Self-energies of ground-state octet and decuplet baryon states due to the coupling to the baryon-meson continuum

TL;DR

This paper calculates how the masses of ground-state octet and decuplet baryons are affected by their interactions with meson-baryon continua, using a QCD-inspired unquenched quark model that explicitly includes quark-antiquark pair creation.

Contribution

It introduces a microscopic, QCD-inspired unquenched quark model to explicitly account for quark-antiquark pair creation effects on baryon mass shifts.

Findings

Mass shifts due to meson-baryon coupling are quantified.

The model provides a more accurate description of baryon masses.

Explicit pair-creation effects are significant in baryon structure.

Abstract

We present an unquenched quark model calculation of the mass shifts of ground-state octet and decuplet baryons due to the coupling to the meson-baryon continuum. The $q\bar{q}$ pair-creation effects are taken explicitly into account through a microscopic, QCD-inspired, quark-antiquark pair- creation mechanism.