Strange and charmed baryons using N_f=2 twisted mass QCD

TL;DR

This study calculates the masses of strange and charmed baryons using N_f=2 twisted mass QCD, analyzing lattice artefacts and meson mass dependence to extrapolate to physical conditions.

Contribution

It provides the first comprehensive mass spectrum of strange and charmed baryons using twisted mass QCD with a detailed continuum and physical point extrapolation.

Findings

Mass estimates for Omega_{sss}, Xi_{dss}, Lambda_{uds}, Omega_{ccc}, Xi_{dcc}, Lambda_{udc}

Analysis of lattice artefacts across three lattice spacings

Dependence of baryon masses on meson and quark masses

Abstract

We compute the mass spectrum for strange/charmed baryons in the partially quenched approach using N_f=2 twisted mass QCD configurations. We investigate two main issues: the size of lattice artefacts using three values of the lattice spacing (the smallest of which is approximately 0.05 fm) and the dependence of baryon masses on meson (or quark) masses. We thus perform a global fit in order to extrapolate simultaneously to the continuum limit and to the physical point. We estimate the masses of Omega_{sss}, Xi_{dss}, Lambda_{uds}, Omega_{ccc}, Xi_{dcc}, Lambda_{udc}.