Renormalization constants for $N_{\rm f}=2+1+1$ twisted mass QCD

Benoit Blossier; Jose Rodr\'iguez-Quintero; Mariane Brinet; Olivier P\`ene; Pierre Guichon; Savvas Zafeiropoulos; Vincent Mor\'enas

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Renormalization constants for $N_{\rm f}=2+1+1$ twisted mass QCD

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arxiv 1411.0053 v2 pith:GXIRCDYJ submitted 2014-11-01 hep-lat

Benoit Blossier , Mariane Brinet , Pierre Guichon , Vincent Morénas , Olivier Pène , Jose Rodríguez-Quintero , Savvas Zafeiropoulos This is my paper

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abstract

We summarize recent non-perturbative results obtained for the renormalization constants computed in the RI'-MOM scheme for $N_{\rm f}=2+1+1$ twisted mass QCD. Our implementation employs the Iwasaki gauge action and four dynamical degenerate twisted mass fermions. Renormalization constants for scalar, pseudo-scalar, vector and axial operators, as well as the quark propagator renormalization, are computed at three different values of the lattice spacing, two different volumes and several values of the twisted mass. Our method allows for a precise cross-check of the running, because of the particular proper treatment of the hypercubic artifacts. Preliminary results for twist-2 operators are also presented.

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