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Self-renormalization of quasi-light-front correlators on the lattice
Huo, Yi-Kai, Su, Yushan, Gui, Long-Cheng, Ji, Xiangdong, Li, Yuan-Yuan, Liu, Yizhuang, Schäfer, Andreas
, Schlemmer, Maximilian, Sun, Peng, Wang, Wei, Yang, Yi-Bo, Zhang, Jian-Hui and Zhang, Kuan
(2021)
Self-renormalization of quasi-light-front correlators on the lattice.
Nuclear Physics B 969 (115443), pp. 1-42.
Date of publication of this fulltext: 20 Feb 2022 14:43
Article
DOI to cite this document: 10.5283/epub.51743
Abstract
In applying large-momentum effective theory, renormalization of the Euclidean correlators in lattice regularization is a challenge due to linear divergences in the self-energy of Wilson lines. Based on lattice QCD matrix elements of the quasi-PDF operator at lattice spacing a = 0.03 fm similar to 0.12 fm with clover and overlap valence quarks on staggered and domain-wall sea, we design a strategy ...
In applying large-momentum effective theory, renormalization of the Euclidean correlators in lattice regularization is a challenge due to linear divergences in the self-energy of Wilson lines. Based on lattice QCD matrix elements of the quasi-PDF operator at lattice spacing a = 0.03 fm similar to 0.12 fm with clover and overlap valence quarks on staggered and domain-wall sea, we design a strategy to disentangle the divergent renormalization factors from finite physics matrix elements, which can be matched to a continuum scheme at short distance such as dimensional regularization and minimal subtraction. Our results indicate that the renormalization factors are universal in the hadron state matrix elements. Moreover, the physical matrix elements appear independent of the valence fermion formulations. These conclusions remain valid even with HYP smearing which reduces the statistical errors albeit reducing control of the renormalization procedure. Moreover, we find a large non-perturbative effect in the popular RI/MOM and ratio renormalization scheme, suggesting favor of the hybrid renormalization procedure proposed recently. (C) 2021 The:Author. Published by Elsevier B.V.
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| Item type | Article | ||||
| Journal or Publication Title | Nuclear Physics B | ||||
| Publisher: | Elsevier | ||||
|---|---|---|---|---|---|
| Place of Publication: | AMSTERDAM | ||||
| Volume: | 969 | ||||
| Number of Issue or Book Chapter: | 115443 | ||||
| Page Range: | pp. 1-42 | ||||
| Date | 25 May 2021 | ||||
| Institutions | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer | ||||
| Identification Number |
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| Keywords | NONPERTURBATIVE RENORMALIZATION; HEAVY | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-517431 | ||||
| Item ID | 51743 |
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