PoS - Proceedings of Science
Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Standard Model Parameters and Renormalization
Non perturbative renormalization of flavor singlet quark bilinear operators in lattice QCD
G. Bali, S. Collins, M. Goeckeler, S. Piemonte,* A. Sternbeck
*corresponding author
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Pre-published on: February 14, 2017
Published on: March 24, 2017
We report on our studies of the renormalization of flavor singlet quark bilinear operators in lattice QCD. The renormalization constants are determined non-perturbatively using gauge field ensembles with Nf=2 dynamical clover improved fermions. The renormalization is performed in the RI'-MOM scheme. The difference between flavor singlet and non-singlet quark bilinear operators is a disconnected contribution, which has to be evaluated by stochastic estimators. We compare our results for the running with perturbation theory.
DOI: https://doi.org/10.22323/1.256.0187
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