Soft dynamics in heavy-light mesons

TL;DR

This paper calculates the charge density distributions and radii of heavy-light mesons, including excited states, using lattice QCD with dynamical quarks and improved static quark actions.

Contribution

It provides detailed radial distributions and charge radii for both ground and excited heavy-light mesons with dynamical quarks, advancing understanding of their internal structure.

Findings

Charge distributions for ground and excited states are obtained.

Charge radii are computed for various meson states.

Results enhance knowledge of heavy-light meson structure.

Abstract

We compute the radial distributions of the scalar, vector and axial charge density in the heavy-light mesons. We present the results obtained for both the lowest lying static heavy-light mesons as well as for their nearest excitations, with $N_f=2$ dynamical quarks of Wilson (Clover) type. We used various improvements of the static heavy-quark actions. From these distributions we were able to compute the corresponding charges and their radii $< r^2>$, the results of which are also presented.