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

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arxiv 1101.0518 v1 pith:H4GTEZ5U submitted 2011-01-03 hep-lat

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

R. Baron , B. Blossier , P. Boucaud , J. Carbonell , A. Deuzeman , V. Drach , F. Farchioni , V. Gimenez
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G. Herdoiza K. Jansen C. Michael I. Montvay E. Pallante O. P\`ene S. Reker C. Urbach M. Wagner U. Wenger (for the ETM Collaboration)
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keywords latticecharmdynamicalfermionsmassspacingstrangethree
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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.

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  1. Impact of Dynamical Charm Quark and Mixed Action Effect on Light Hadron Masses and Decay Constants

    hep-lat 2026-03 conditional novelty 6.0

    A dynamical charm quark does not measurably change light-hadron masses or decay constants, and a clover-on-HISQ mixed action reduces O(a^2) discretization errors in the continuum limit.