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First lattice QCD study of the gluonic structure of light nuclei

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dc.contributor.author Winter, Frank
dc.contributor.author Gambhir, Arjun S.
dc.contributor.author Orginos, Kostas
dc.contributor.author Savage, Martin J.
dc.contributor.author Shanahan, Phiala E.
dc.contributor.author Detmold, William
dc.contributor.author Wagman, Michael L
dc.date.accessioned 2017-12-05T19:07:40Z
dc.date.available 2017-12-05T19:07:40Z
dc.date.issued 2017-11
dc.date.submitted 2017-09
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.identifier.uri http://hdl.handle.net/1721.1/112406
dc.description.abstract The role of gluons in the structure of the nucleon and light nuclei is investigated using lattice quantum chromodynamics (QCD) calculations. The first moment of the unpolarized gluon distribution is studied in nuclei up to atomic number A=3 at quark masses corresponding to pion masses of m[subscript π]∼450 and 806 MeV. Nuclear modification of this quantity defines a gluonic analogue of the EMC effect and is constrained to be less than ∼10% in these nuclei. This is consistent with expectations from phenomenological quark distributions and the momentum sum rule. In the deuteron, the combination of gluon distributions corresponding to the b[subscript 1]structure function is found to have a small first moment compared with the corresponding momentum fraction. The first moment of the gluon transversity structure function is also investigated in the spin-1 deuteron, where a nonzero signal is observed at m[subscript π]∼806  MeV. This is the first indication of gluon contributions to nuclear structure that can not be associated with an individual nucleon. en_US
dc.description.sponsorship United States. Department of Energy (Award DE-SC001049) en_US
dc.description.sponsorship United States. Department of Energy (Grant DE- SC001109) en_US
dc.description.sponsorship United States. Department of Energy (Grant DE-FG02-00ER4113) en_US
dc.publisher American Physical Society en_US
dc.relation.isversionof http://dx.doi.org/10.1103/PhysRevD.96.094512 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 First lattice QCD study of the gluonic structure of light nuclei en_US
dc.type Article en_US
dc.identifier.citation Winter, Frank et al. "First lattice QCD study of the gluonic structure of light nuclei." Physical Review D 96, 9 (November 2017): 094512 © 2017 American Physical Society en_US
dc.contributor.department Massachusetts Institute of Technology. Center for Theoretical Physics en_US
dc.contributor.department Massachusetts Institute of Technology. Department of Physics en_US
dc.contributor.mitauthor Detmold, William
dc.contributor.mitauthor Wagman, Michael L
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 2017-11-29T18:00:21Z
dc.language.rfc3066 en
dc.rights.holder American Physical Society
dspace.orderedauthors Winter, Frank; Detmold, William; Gambhir, Arjun S.; Orginos, Kostas; Savage, Martin J.; Shanahan, Phiala E.; Wagman, Michael L. en_US
dspace.embargo.terms N en_US
dc.identifier.orcid https://orcid.org/0000-0002-0400-8363


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