Pion mass dependence of the electromagnetic form factors of singly heavy baryons

TL;DR

This paper investigates how the electromagnetic form factors of singly heavy baryons depend on pion mass using the chiral quark-soliton model, comparing results with lattice QCD data across different pion masses.

Contribution

It introduces a pion mass-dependent analysis of baryon form factors within the chiral quark-soliton model, aligning theoretical predictions with lattice QCD results.

Findings

Form factors decrease faster with physical pion mass than lattice data.

Larger pion masses in the model yield results closer to lattice data.

Pion mass variation is crucial for accurate comparison with lattice calculations.

Abstract

We study the electromagnetic form factors of the lowest-lying singly heavy baryons with spin 1/2 within the framework of the chiral quark-soliton model, focusing on the comparison with recent lattice data. To compare the present results quantitatively with the lattice data, it is essential to treat the pion mass as a variable parameter, i.e., to employ the unphysical values of the pion mass, which are used in lattice calculations. While the results with the physical value of the pion mass fall off faster than those from the lattice calculations as the momentum transfer increases, the extrapolated results with larger pion masses get closer to the lattice data.