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arXiv · 1111.3023

RI/MOM renormalization constants (N_f=4) and the strong coupling constant (N_f=2+1+1) from twisted-mass QCD

B. Blossier·Ph. Boucaud·M. Brinet·F. De Soto·X. Du·M. Gravina·Z. Liu·V. Morenas·O. Pène·K. Petrov·J. Rodríguez-Quintero
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Abstract

We study RI/MOM renormalization constants of bilinear quark operators for $N_f=4$ and the strong coupling constant for $N_f=2+1+1$ using Wilson twisted-mass fermions. We use the "egalitarian" method to remove H(4) hypercubic artifacts non-perturbatively, which enables us to study physical quantities in a wide range of momenta. We then apply OPE in studying the running behavior of $Z_q$ and $\alpha_s$, from which we are able to extract the Landau gauge dimension-two gluon condensate $ $ which is of phenomenological interest.

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B. Blossier, Ph. Boucaud, M. Brinet, F. De Soto, X. Du, M. Gravina, Z. Liu, V. Morenas, O. Pène, K. Petrov, J. Rodríguez-Quintero. 2011-11-13. RI/MOM renormalization constants (N_f=4) and the strong coupling constant (N_f=2+1+1) from twisted-mass QCD. https://arxiv.org/abs/1111.3023

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