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dc.contributor.authorCMS Collaboration
Adair, A.
Boulahouache, C.
Ecklund, K.M.
Geurts, F.J.M.
Padley, B.P.
Redjimi, R.
Roberts, J.
Zabel, J.
dc.date.accessioned 2015-07-17T18:46:47Z
dc.date.available 2015-07-17T18:46:47Z
dc.date.issued 2011
dc.identifier.citation CMS Collaboration, Adair, A., Boulahouache, C., et al.. "Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC." Physical Review D, 84, (2011) American Physical Society: 112002. http://dx.doi.org/10.1103/PhysRevD.84.112002.
dc.identifier.urihttps://hdl.handle.net/1911/81068
dc.description.abstract A multivariate likelihood method to measure electroweak couplings with the Drell–Yan process at the LHC is presented. The process is described by the dilepton rapidity, invariant mass, and decay angle distributions. The decay angle ambiguity due to the unknown assignment of the scattered constituent quark and antiquark to the two protons in a collision is resolved statistically using correlations between the observables. The method is applied to a sample of dimuon events from proton-proton collisions at √s=7  TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 1.1  fb−1. From the dominant uu¯, dd¯→γ∗/Z→μ−μ+ process, the effective weak mixing angle parameter is measured to be sin2θeff=0.2287±0.0020 (stat.)±0.0025 (syst.). This result is consistent with measurements from other processes, as expected within the standard model.
dc.language.iso eng
dc.publisher American Physical Society
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.
dc.title Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC
dc.type Journal article
dc.citation.journalTitle Physical Review D
dc.citation.volumeNumber 84
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevD.84.112002
dc.type.publication publisher version
dc.citation.firstpage 112002


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