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

2011/11/13 by B. Blossier, Ph. Boucaud, Blossier, B. +23
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat

paper · pdf · doi:10.48550/arxiv.1111.3023

7 pages, talk presented at The XXIX International Symposium on Lattice Field Theory - Lattice 2011, July 10-16, 2011, Squaw Valley, Lake Tahoe, California

arxiv created 2011/11/13 · openalex publication_date 2011/11/13 · arxiv updated 2011/11/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 α_s, from which we are able to extract the Landau gauge dimension-two gluon condensate <A²> which is of phenomenological interest.

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