RI/(S)MOM renormalizations of overlap quark bilinears with different levels of hypercubic smearing

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Abstract

On configurations with 2+1-flavor dynamical domain-wall fermions, we calculate the RI/(S)MOM renormalization constants (RC) of overlap quark bilinears. Hypercubic (HYP) smearing is used to construct the overlap Dirac operator. We investigate the possible effects of the smearing on discretization errors in the RCs by varying the level of smearing from 0 to 1 and 2. The lattice is of size 323×64 and with lattice spacing 1/a=2.383(9) GeV. The RCs in the MS¯ scheme at 2 GeV are given at the end, with the uncertainty of ZT reaching ≤1% for the tensor current. Results of the renormalized quark masses and hadron matrix elements show that the renormalization procedure suppresses the ∼30% difference of the bare quantities with or without HYP smearing into the 3%-5% level.

Original languageEnglish
Article number054506
JournalPhysical Review D
Volume108
Issue number5
DOIs
StatePublished - Sep 1 2023

Bibliographical note

Publisher Copyright:
© 2023 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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