On internal structure of the heavy-light mesons

TL;DR

This paper calculates the internal charge and matter distributions within heavy-light mesons using lattice QCD, providing insights into their structure and form factors for both ground and excited states.

Contribution

It introduces lattice QCD computations of radial distributions and form factors for heavy-light mesons, including excited states, with various static quark actions and dynamical quarks.

Findings

Radial distributions of vector, axial, and matter densities are obtained.

Charges and form factor slopes are computed from these distributions.

Results include distributions and form factors for both ground and excited heavy-light mesons.

Abstract

We compute the radial distributions of the vector and axial charge density as well as of the matter density in the heavy-light mesons on the lattice. The results for the lowest lying static heavy-light mesons and their first excited counterparts are obtained with Nf=2 dynamical quarks of Wilson (Clover) type and with the various improved static heavy quark actions. From these distributions we were able to compute the corresponding charges and slopes of the form factors (i.e. <r^2>). Those results are also presented, and briefly discussed too.