RI/MOM and RI/SMOM renormalization of quark bilinear operators using overlap fermions

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We present the vector, scalar, and tensor renormalization constants (RCs) using overlap fermions with either regularization independent momentum subtraction (RI/MOM) or symmetric momentum subtraction (RI/SMOM) as the intermediate scheme on the lattice with lattice spacings a from 0.04 fm to 0.12 fm. Our gauge field configurations from the MILC and RBC/UKQCD collaborations include sea quarks using either the domain wall or the HISQ action, respectively. The results show that RI/MOM and RI/SMOM can provide consistent renormalization constants to the MS¯ scheme, after proper a2p2 extrapolations. But at p∼2 GeV, both RI/MOM and RI/SMOM suffer from nonperturbative effects which cannot be removed by the perturbative matching. The comparison between the results with different sea actions also suggests that the renormalization constant is discernibly sensitive to the lattice spacing but not to the bare gauge coupling in the gauge action.

Original languageEnglish
Article number114506
JournalPhysical Review D
Issue number11
StatePublished - Dec 1 2022

Bibliographical note

Funding Information:
We thank the RBC and UKQCD collaborations for providing us their DWF gauge configurations, the MILC collaboration for providing their HISQ gauge configurations, and J. A. Gracey for valuable discussions. The calculations were performed using the GWU code through the HIP programming model . The numerical calculations in this study were carried out on the ORISE Supercomputer and HPC Cluster of ITP-CAS. This research used resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. This work used Stampede time under the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant No. ACI-1053575. We also thank the National Energy Research Scientific Computing Center (NERSC) for providing HPC resources that have contributed to the research results reported within this paper. We acknowledge the facilities of the USQCD Collaboration used for this research in part, which are funded by the Office of Science of the U.S. Department of Energy. Y. B. and Z. L. are supported in part by the National Natural Science Foundation of China (NSFC) under Grant No. 12075253 (Y. B., Z. L.) and 11935017 (Z. L.). T. D. and K. L. are supported by the U.S. DOE Grant No. DE-SC0013065 (T. D., K. L.) and DOE Grant No. DE-AC05-06OR23177 (K. L.), which is within the framework of the TMD Topical Collaboration. Y. Y. is supported by the Strategic Priority Research Program of Chinese Academy of Sciences, Grants No. XDB34030303, No. XDPB15, NSFC under Grant No. 12047503, and a NSFC-DFG joint grant under Grants No. 12061131006 and No. SCHA 458/22

Publisher Copyright:
© 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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