Chiral excitations of open-beauty systems

TL;DR

This paper investigates chiral interactions of open-beauty mesons with Goldstone bosons, predicting new resonances by combining chiral SU(3) theory with heavy-quark symmetry insights, based on lattice QCD data.

Contribution

It extends chiral SU(3) analysis to open-beauty systems, incorporating subleading interactions and heavy-quark symmetry breaking to predict dynamically generated resonances.

Findings

Predicted flavor anti-triplet and sextet resonances.

Refined mass and coupling predictions for open-beauty mesons.

Quantitative estimates of subleading chiral effects.

Abstract

We study the scattering of open-beauty mesons and Goldstone bosons as predicted by the chiral SU(3) Lagrangian. The impact of subleading order chiral interactions to systems with $J^P= 0^+$ and $J^P=1^+$ quantum numbers is worked out. We estimate the relevant low-energy coefficients from the open-charm sector, for which their values have been determined previously from sets of QCD lattice data. The leading order heavy-quark symmetry breaking effects are estimated by matching the $B$-meson ground-state chiral mass formula to the mass formula from the heavy-quark effective theory. We make refined predictions for the flavor anti-triplet and sextet resonances that are generated dynamically by coupled-channel interactions.