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Measurement of the electron charge asymmetry in inclusive W production in pp collisions at √s=7TeV

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A measurement of the electron charge asymmetry in inclusive pp→W+X→eν+X production at √s=7TeV is presented based on data recorded by the CMS detector at the LHC and corresponding to an integrated luminosity of 840pb-1. The electron charge asymmetry reflects the unequal production of W+ and W- bosons in pp collisions. The electron charge asymmetry is measured in bins of the absolute value of electron pseudorapidity in the range of |η|<2.4. The asymmetry rises from about 0.1 to 0.2 as a function of the pseudorapidity and is measured with a relative precision better than 7%. This measurement provides new stringent constraints for parton distribution functions.

Anahtar Kelimeler

BosonsColliding beam acceleratorsAbsolute valuesCharge asymmetriesCMS detectorsElectron chargeIntegrated luminosityMeasurements ofParton distribution functionsPseudorapiditiesStringent constraintsW bosonsElectrons
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dc.contributor.authorChatrchyan, S.
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorErö, J.
dc.contributor.authorFabjan, C.
dc.contributor.authorFriedl, M.
dc.contributor.authorFrühwirth, R.
dc.contributor.authorGhete, V.M.
dc.contributor.authorHammer, J.
dc.contributor.authorHörmann, N.
dc.contributor.authorHrubec, J.
dc.contributor.authorJeitler, M.
dc.contributor.authorKiesenhofer, W.
dc.contributor.authorKnünz, V.
dc.contributor.authorKrammer, M.
dc.contributor.authorLiko, D.
dc.contributor.authorMikulec, I.
dc.contributor.authorPernicka, M.
dc.contributor.authorRahbaran, B.
dc.contributor.authorRohringer, C.
dc.contributor.authorRohringer, H.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorStrauss, J.
dc.contributor.authorTaurok, A.
dc.contributor.authorWagner, P.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWalzel, G.
dc.contributor.authorWidl, E.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorMossolov, V.
dc.contributor.authorShumeiko, N.
dc.contributor.authorSuarez Gonzalez, J.
dc.contributor.authorBansal, S.
dc.contributor.authorCornelis, T.
dc.contributor.authorDe Wolf, E.A.
dc.contributor.authorJanssen, X.
dc.contributor.authorLuyckx, S.
dc.contributor.authorMaes, T.
dc.contributor.authorMucibello, L.
dc.contributor.authorOchesanu, S.
dc.contributor.authorRoland, B.
dc.contributor.authorRougny, R.
dc.contributor.authorSelvaggi, M.
dc.contributor.authorStaykova, Z.
dc.contributor.authorVan Haevermaet, H.
dc.contributor.authorVan Mechelen, P.
dc.date.accessioned2026-10-18T20:30:23.444348029Z
dc.date.available2026-10-18T20:30:23.444348029Z
dc.date.issued2012
dc.description.abstractA measurement of the electron charge asymmetry in inclusive pp→W+X→eν+X production at √s=7TeV is presented based on data recorded by the CMS detector at the LHC and corresponding to an integrated luminosity of 840pb-1. The electron charge asymmetry reflects the unequal production of W+ and W- bosons in pp collisions. The electron charge asymmetry is measured in bins of the absolute value of electron pseudorapidity in the range of |η|<2.4. The asymmetry rises from about 0.1 to 0.2 as a function of the pseudorapidity and is measured with a relative precision better than 7%. This measurement provides new stringent constraints for parton distribution functions.
dc.description.sponsorshipSchweizerischer Nationalfonds zur F&#x00F6;rderung der Wissenschaftlichen Forschung, SNF, (138111, 123501, 134939); Schweizerischer Nationalfonds zur F&#x00F6;rderung der Wissenschaftlichen Forschung, SNF; Science and Technology Facilities Council, STFC, (ST/H00081X/2, ST/I005912/1, ST/F007094/1, ST/I002200/1, ST/K001256/1, ST/L001225/1, ST/G502347/1, ST/I000410/1, ST/J005614/1, ST/J004901/1, ST/F006748/1, PP/E002722/1, ST/J005665/1, ST/H000925/1, ST/K001604/1, ST/F007434/1, ST/I505580/1, ST/J004820/1, ST/I002839/1, ST/K000616/1, ST/G502412/1, ST/I505572/1, GRIDPP); Science and Technology Facilities Council, STFC; National Science Foundation, NSF, (1211067); National Science Foundation, NSF
dc.identifier.doi10.1103/physrevlett.109.111806
dc.identifier.issn0031-9007
dc.identifier.issue11
dc.identifier.scopus2-s2.0-84866373774
dc.identifier.startpage111806
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/15537
dc.identifier.volume109
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.ispartofPhysical Review Letters
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBosons
dc.subjectColliding beam accelerators
dc.subjectAbsolute values
dc.subjectCharge asymmetries
dc.subjectCMS detectors
dc.subjectElectron charge
dc.subjectIntegrated luminosity
dc.subjectMeasurements of
dc.subjectParton distribution functions
dc.subjectPseudorapidities
dc.subjectStringent constraints
dc.subjectW bosons
dc.subjectElectrons
dc.titleMeasurement of the electron charge asymmetry in inclusive W production in pp collisions at √s=7TeV
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus114
rdl.oa.statusgold
rdl.source.indexSCOPUS