Baryon spectroscopy in the unquenched quark model

TL;DR

This paper explores how the unquenched quark model, which incorporates sea quark effects, improves the understanding of baryon properties like electromagnetic couplings and beta decays over the traditional constituent quark model.

Contribution

It demonstrates that including sea quark effects via the 3P0 mechanism significantly improves agreement with experimental data in baryon spectroscopy.

Findings

Sea quark effects explain discrepancies in electromagnetic couplings.

Unquenched model aligns better with beta decay data.

Sea quarks account for observed deviations from CQM predictions.

Abstract

We discuss some applications of the unquenched quark model which is an extension of the CQM that includes the effects of sea quarks via a 3P0 quark-antiquark pair-creation mechanism. Particular attention is paid to the electromagnetic couplings and beta decays of baryons. It is shown that the observed discrepancies between the experimental data and the predictions of the CQM can be accounted for in large part by the effects of sea quarks in the unquenched quark model.