P- and D-wave spin-orbit splittings in heavy-light mesons

TL;DR

This paper presents lattice QCD calculations of excited heavy-light meson states, focusing on spin-orbit splittings, and compares results with experimental data or provides predictions for P-wave states.

Contribution

It provides detailed lattice measurements of radial and orbital excitations, emphasizing spin-orbit splitting patterns in heavy-light mesons.

Findings

Calculated spin-orbit splittings for P- and D-wave states

Compared lattice results with experimental data for B_s mesons

Predicted energies of unmeasured excited states

Abstract

This is a summary of a detailed study of heavy-light meson excited state energies. Our lattice measurements include both radial and orbital excitations. Particular attention is paid to the spin-orbit splittings, to see which one of the states (for a given angular momentum L) has the lower energy. In nature the closest equivalent of this heavy-light system is the B_s meson, which allows us to compare our lattice calculations to experimental results (where available) or give a prediction where the excited states, particularly P-wave states, should lie.