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

Benoit Blossier; Mariane Brinet; Pierre Guichon; Vincent Morénas; Olivier Pène; Jose Rodríguez-Quintero; Savvas Zafeiropoulos

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

High Energy Physics - Lattice 2014-11-11 v2

Authors: Benoit Blossier , Mariane Brinet , Pierre Guichon , Vincent Morénas , Olivier Pène , Jose Rodríguez-Quintero , Savvas Zafeiropoulos

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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.

Keywords

renormalization constants twisted mass QCD RI'-MOM scheme lattice spacing hypercubic artifacts twist-2 operators Iwasaki gauge action

Cite

@article{arxiv.1411.0053,
  title  = {Renormalization constants for $N_{\rm f}=2+1+1$ twisted mass QCD},
  author = {Benoit Blossier and Mariane Brinet and Pierre Guichon and Vincent Morénas and Olivier Pène and Jose Rodríguez-Quintero and Savvas Zafeiropoulos},
  journal= {arXiv preprint arXiv:1411.0053},
  year   = {2014}
}

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

Abstract

Keywords

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