Quark mass dependence of hadron resonances

TL;DR

This paper investigates how the masses of certain hadron resonances depend on light quark masses by analyzing lattice QCD data and applying chiral perturbation theory and statistical model selection techniques.

Contribution

It introduces a combined approach using HHχPT and LASSO to extrapolate lattice data for charmed mesons and determine their quark mass dependence.

Findings

Quantified the quark mass dependence of $D_{s0}(2317)$ and $D_{s1}(2460)$.

Provided extrapolated resonance masses at physical quark masses.

Enhanced understanding of exotic resonance behavior with respect to quark mass variations.

Abstract

We study the dependence of the $D_{s0}(2317)$ mass on the light quark mass through the analysis of data from QCD lattice simulations. Combining HH$\chi$PT and model selection tools as the LASSO method we fit the lattice data of the low-lying charmed mesons masses, obtaining their extrapolation to the physical point and extracting results for the quark mass dependence of the exotic resonances $D_{s0}(2317)$ and $D_{s1}(2460)$, taking as input the energy levels from a lattice simulation.