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Measurement of Strange Quark Contributions to the Vector Form Factors of the Proton at Q[superscript 2]=0.22  (GeV/c)[superscript 2]

dc.contributor.authorBaunack, S.
dc.contributor.authorAulenbacher, K.
dc.contributor.authorBalaguer Rios, D.
dc.contributor.authorCapozza, L.
dc.contributor.authorDiefenbach, J.
dc.contributor.authorGlaser, B.
dc.contributor.authorvon Harrach, D.
dc.contributor.authorImai, Y.
dc.contributor.authorKabuB, E.-M.
dc.contributor.authorKothe, R.
dc.contributor.authorLee, J. H.
dc.contributor.authorMerkel, H.
dc.contributor.authorMora Espi, M. C.
dc.contributor.authorMuller, U.
dc.contributor.authorShilling, E.
dc.contributor.authorStephan, G.
dc.contributor.authorWeinrich, C.
dc.contributor.authorArvieux, J.
dc.contributor.authorEl-Yakoubi, M. A.
dc.contributor.authorFrascaria, R.
dc.contributor.authorKunne, R.
dc.contributor.authorMaas, F. E.
dc.contributor.authorMorlet, M.
dc.contributor.authorOng, S.
dc.contributor.authorvan de Wiele, J.
dc.contributor.authorProk, Yelena
dc.contributor.authorTaylor, S.
dc.contributor.authorKowalski, Stanley B
dc.date.accessioned2010-03-17T17:32:27Z
dc.date.available2010-03-17T17:32:27Z
dc.date.issued2009-04
dc.date.submitted2008-11
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1721.1/52673
dc.description.abstractA new measurement of the parity violating asymmetry in elastic electron scattering on hydrogen at backward angles and at a four momentum transfer of Q[superscript 2]=0.22   (GeV/c)[superscript 2] is reported here. The measured asymmetry is A[subscript LR]=(-17.23±0.82stat±0.89syst)×10-6. The standard model prediction assuming no strangeness is A[subscript 0]=(-15.87±1.22)×10[superscript -6]. In combination with previous results from measurements at forward angles, it is possible to disentangle for the first time the strange form factors at this momentum transfer, GE[superscript s]=0.050±0.038±0.019 and GM[superscript s]=-0.14±0.11±0.11.en
dc.language.isoen_US
dc.publisherAmerican Physical Societyen
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevLett.102.151803en
dc.rightsArticle 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
dc.sourceAPSen
dc.titleMeasurement of Strange Quark Contributions to the Vector Form Factors of the Proton at Q[superscript 2]=0.22  (GeV/c)[superscript 2]en
dc.typeArticleen
dc.identifier.citationBaunack, S. et al "Measurement of Strange Quark Contributions to the Vector Form Factors of the Proton at Q2=0.22   (GeV/c)2." Physical Review Letters 102.15 (2009): 151803. © 2009 The American Physical Societyen
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Laboratory for Nuclear Scienceen_US
dc.contributor.approverKowalski, Stanley B.
dc.contributor.mitauthorKowalski, Stanley B.
dc.contributor.mitauthorProk, Yelena
dc.contributor.mitauthorTaylor, S.
dc.relation.journalPhysical Review Lettersen
dc.eprint.versionFinal published versionen
dc.type.urihttp://purl.org/eprint/type/JournalArticleen
eprint.statushttp://purl.org/eprint/status/PeerRevieweden
dspace.orderedauthorsBaunack, S.; Aulenbacher, K.; Balaguer Ríos, D.; Capozza, L.; Diefenbach, J.; Gläser, B.; von Harrach, D.; Imai, Y.; Kabuß, E.-M.; Kothe, R.; Lee, J.; Merkel, H.; Mora Espí, M.; Müller, U.; Schilling, E.; Stephan, G.; Weinrich, C.; Arvieux, J.; El-Yakoubi, M.; Frascaria, R.; Kunne, R.; Maas, F.; Morlet, M.; Ong, S.; van de Wiele, J.; Kowalski, S.; Prok, Y.; Taylor, S.en
dc.identifier.orcidhttps://orcid.org/0000-0003-3088-6060
mit.licensePUBLISHER_POLICYen
mit.metadata.statusComplete


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