Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea

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dc.creatorHawker, E. A.
dc.creatorAwes, T. C.
dc.creatorBeddo, M. E.
dc.creatorBrown, C. N.
dc.creatorBush, J. D.
dc.creatorCarey, T. A.
dc.creatorChang, T. H.
dc.creatorCooper, W. E.
dc.creatorGagliardi, C. A.
dc.creatorGarvey, G. T.
dc.creatorGeesaman, D. F.
dc.creatorHe, X. C.
dc.creatorIsenhower, L. D.
dc.creatorKaufman, S. B.
dc.creatorKaplan, D. M.
dc.creatorKirk, P. N.
dc.creatorKoetke, D. D.
dc.creatorKyle, G.
dc.creatorLee, D. M.
dc.creatorLee, W. M.
dc.creatorLeitch, M. J.
dc.creatorMakins, N.
dc.creatorMcGaughey, P. L.
dc.creatorMoss, J. M.
dc.creatorMueller, B. A.
dc.creatorNord, P. M.
dc.creatorPark, B. K.
dc.creatorPapavassiliou, V.
dc.creatorPeng, J. C.
dc.creatorPetitt, G.
dc.creatorReimer, P. E.
dc.creatorSadler, M. E.
dc.creatorSelden, J.
dc.creatorStankus, P. W.
dc.creatorSondheim, W. E.
dc.creatorThompson, T. N.
dc.creatorTowell, R. S.
dc.creatorTribble, R. E.
dc.creatorVasiliev, M. A.
dc.creatorWang, Y. C.
dc.creatorWang, Z. F.
dc.creatorWebb, J. C.
dc.creatorWillis, J. L.
dc.creatorWise, D. K.
dc.creatorYoung, G. R.
dc.date1998-03-12
dc.date.accessioned2026-07-07T12:02:20Z
dc.date.available2026-07-07T12:02:20Z
dc.descriptionA precise measurement of the ratio of Drell-Yan yields from an 800 GeV/c proton beam incident on hydrogen and deuterium targets is reported. Over 140,000 Drell-Yan muon pairs with dimuon mass M_{mu+ mu-} >= 4.5 GeV/c^2 were recorded. From these data, the ratio of anti-down (dbar) to anti-up (ubar) quark distributions in the proton sea is determined over a wide range in Bjorken-x. A strong x dependence is observed in the ratio dbar/ubar, showing substantial enhancement of dbar with respect to ubar for x<0.2. This result is in fair agreement with recent parton distribution parameterizations of the sea. For x>0.2, the observed dbar/ubar ratio is much nearer unity than given by the parameterizations.
dc.descriptionREVTeX, to be published in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/hep-ex/9803011
dc.identifierhttp://arxiv.org/abs/hep-ex/9803011
dc.identifierPhys.Rev.Lett.80:3715-3718,1998
dc.identifierdoi:10.1103/PhysRevLett.80.3715
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207403
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
dc.typetext

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