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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 ; Zhang, Kuan

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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Details

Item typeArticle
Journal or Publication TitleNuclear Physics B
Publisher:Elsevier
Place of Publication:AMSTERDAM
Volume:969
Number of Issue or Book Chapter:115443
Page Range:pp. 1-42
Date25 May 2021
InstitutionsPhysics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer
Identification Number
ValueType
10.1016/j.nuclphysb.2021.115443DOI
KeywordsNONPERTURBATIVE RENORMALIZATION; HEAVY
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-517431
Item ID51743

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