The hadron spectrum from twisted mass QCD with a strange quark

TL;DR

This paper explores the spectrum of strange hadrons using twisted mass QCD with a strange quark, focusing on the effects of different twist angles in quenched simulations.

Contribution

It introduces a method for incorporating the strange quark into twisted mass QCD using two twisted doublets with separate twist angles and presents preliminary spectrum results.

Findings

Preliminary spectrum results for strange hadrons in quenched twisted mass QCD.

Insights into symmetry breaking effects from mass splittings within multiplets.

Tuning of twist angles to pi/2 for optimal simulation conditions.

Abstract

Various suggestions exist for incorporating the strange quark into twisted mass QCD. One option for quenched simulations is to employ two twisted doublets, (u,d) and (c,s), with separate twist angles. Working in the isospin limit, preliminary results for the quenched spectrum of strange hadrons are presented, with both twist angles tuned to pi/2. Splittings within the mass multiplets provide some insight into the symmetry breaking effects of twisted mass lattice QCD.