Kniehl, Bernd A. and Veretin, Oleg L. (2020) Bilinear quark operators in the RI/SMOM scheme at three loops. PHYSICS LETTERS B, 804: 135398. ISSN 0370-2693, 1873-2445
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We consider the renormalization of the matrix elements of the bilinear quark operators (psi) over bar psi, (psi) over bar gamma(mu)psi, and (psi) over bar sigma(mu nu)psi at next-to-next-to-next-to-leading order in QCD perturbation theory at the symmetric subtraction point. This allows us to obtain conversion factors between the (MS) over bar scheme and the regularization invariant symmetric momentum subtraction (RI/SMOM) scheme. The obtained results can be used to reduce the errors in determinations of quark masses from lattice QCD simulations. The results are given in Landau gauge. (c) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MASTER INTEGRALS; RENORMALIZATION; (MS)OVER-BAR; ALGORITHM; PARTS; Lattice QCD; Bilinear quark operators; (MS)over-bar scheme; Regularization invariant symmetric MOM scheme; Three-loop approximation |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Mar 2021 10:01 |
| Last Modified: | 24 Mar 2021 10:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44584 |
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