Comparative analysis of large Nc QCD and quark model approaches to baryons

TL;DR

This paper demonstrates a strong agreement between potential quark models and the 1/Nc expansion for baryon masses, supporting the validity of relativistic quark models across various baryon types.

Contribution

It provides a comparative analysis showing compatibility between quark model predictions and the large Nc mass formula for both light and heavy baryons.

Findings

Potential model and 1/Nc expansion results are highly compatible.

Good agreement for strange, nonstrange, and heavy baryons.

Supports the physical validity of relativistic quark models.

Abstract

We show that a remarkable compatibility exists between the results of a potential model with constituent quarks and the 1/Nc expansion mass formula for strange and nonstrange baryon resonances. Such compatibility brings support to the basic assumptions of relativistic quark models and sheds light on the physical content of the model-independent large Nc mass formula. Good agreement between both approaches is also found for heavy baryons, made of one heavy and two light quarks, in the ground state band.