Light hadrons from Nf=2+1+1 dynamical twisted mass fermions

TL;DR

This paper reports on lattice QCD simulations with Nf=2+1+1 dynamical twisted mass fermions, analyzing light hadron properties and tuning quark masses across multiple lattice spacings to study chiral behavior.

Contribution

It introduces a comprehensive lattice QCD study with twisted mass fermions including strange and charm quarks at multiple lattice spacings, and explores chiral perturbation theory applications.

Findings

Successful tuning of strange and charm quark masses at three lattice spacings.

Preliminary insights into SU(2) chiral perturbation theory from lattice data.

Data spanning lattice sizes from 1.9 to 3.9 fm.

Abstract

We present results of lattice QCD simulations with mass-degenerate up and down and mass-split strange and charm (Nf=2+1+1) dynamical quarks using Wilson twisted mass fermions at maximal twist. The tuning of the strange and charm quark masses is performed at three values of the lattice spacing a~0.06 fm, a~0.08 fm and a~0.09 fm with lattice sizes ranging from L~1.9 fm to L~3.9 fm. We perform a preliminary study of SU(2) chiral perturbation theory by combining our lattice data from these three values of the lattice spacing.