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Nucleon transverse momentum-dependent parton distributions in lattice QCD: Renormalization patterns and discretization effects

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dc.contributor.author Yoon, Boram
dc.contributor.author Engelhardt, Michael
dc.contributor.author Gupta, Rajan
dc.contributor.author Bhattacharya, Tanmoy
dc.contributor.author Green, Jeremy R.
dc.contributor.author Musch, Bernhard U.
dc.contributor.author Schäfer, Andreas
dc.contributor.author Syritsyn, Sergey N.
dc.contributor.author Negele, John W
dc.contributor.author Pochinsky, Andrew
dc.date.accessioned 2017-12-05T18:34:25Z
dc.date.available 2017-12-05T18:34:25Z
dc.date.issued 2017-11
dc.date.submitted 2017-06
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.identifier.uri http://hdl.handle.net/1721.1/112402
dc.description.abstract Lattice QCD calculations of transverse momentum-dependent parton distribution functions (TMDs) in nucleons are presented, based on the evaluation of nucleon matrix elements of quark bilocal operators with a staple-shaped gauge connection. Both time-reversal odd effects, namely, the generalized Sivers and Boer-Mulders transverse momentum shifts, as well as time-reversal even effects, namely, the generalized transversity and one of the generalized worm-gear shifts, are studied. Results are obtained on two different n[subscript f]=2+1 flavor ensembles with approximately matching pion masses but very different discretization schemes: domain-wall fermions (DWF) with lattice spacing a=0.084  fm and pion mass 297 MeV, and Wilson-clover fermions with a=0.114  fm and pion mass 317 MeV. Comparison of the results on the two ensembles yields insight into the length scales at which lattice discretization errors are small, and into the extent to which the renormalization pattern obeyed by the continuum QCD TMD operator continues to apply in the lattice formulation. For the studied TMD observables, the results are found to be consistent between the two ensembles at sufficiently large separation of the quark fields within the operator, whereas deviations are observed in the local limit and in the case of a straight link gauge connection, which is relevant to the studies of parton distribution functions. Furthermore, the lattice estimates of the generalized Sivers shift obtained here are confronted with, and are seen to tend towards, a phenomenological estimate extracted from experimental data. en_US
dc.description.sponsorship United States. Department of Energy (Grant DE-FG02-96ER40965) en_US
dc.description.sponsorship United States. Department of Energy (Grant DE-SC-0011090) en_US
dc.description.sponsorship United States. Department of Energy (Grant DE-FC02-06ER41444) en_US
dc.publisher American Physical Society en_US
dc.relation.isversionof http://dx.doi.org/10.1103/PhysRevD.96.094508 en_US
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. en_US
dc.source American Physical Society en_US
dc.title Nucleon transverse momentum-dependent parton distributions in lattice QCD: Renormalization patterns and discretization effects en_US
dc.type Article en_US
dc.identifier.citation Yoon, Boram et al. "Nucleon transverse momentum-dependent parton distributions in lattice QCD: Renormalization patterns and discretization effects." Physical Review D 96, 9 (November 2017): 094508 © 2017 American Physical Society en_US
dc.contributor.department Massachusetts Institute of Technology. Laboratory for Nuclear Science en_US
dc.contributor.department Massachusetts Institute of Technology. Department of Physics en_US
dc.contributor.department Massachusetts Institute of Technology. Center for Theoretical Physics en_US
dc.contributor.mitauthor Negele, John W
dc.contributor.mitauthor Pochinsky, Andrew
dc.relation.journal Physical Review D en_US
dc.identifier.mitlicense PUBLISHER_POLICY en_US
dc.eprint.version Final published version en_US
dc.type.uri http://purl.org/eprint/type/JournalArticle en_US
eprint.status http://purl.org/eprint/status/PeerReviewed en_US
dc.date.updated 2017-11-22T18:00:01Z
dc.language.rfc3066 en
dc.rights.holder American Physical Society
dspace.orderedauthors Yoon, Boram; Engelhardt, Michael; Gupta, Rajan; Bhattacharya, Tanmoy; Green, Jeremy R.; Musch, Bernhard U.; Negele, John W.; Pochinsky, Andrew V.; Schäfer, Andreas; Syritsyn, Sergey N. en_US
dspace.embargo.terms N en_US
dc.identifier.orcid https://orcid.org/0000-0002-5713-0039


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