Measurement of Wγ and Zγ production in pp collisions at √s=7 TeV
Entity
UAM. Departamento de Física TeóricaPublisher
CERN; ElsevierDate
2011-07-27Citation
10.1016/j.physletb.2011.06.034
Physics Letters B 701.5 (2011) 535-555
ISSN
0370-2693 (print); 1873-2445 (online)DOI
10.1016/j.physletb.2011.06.034Funded by
We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLPFAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)Editor's Version
http://dx.doi.org/10.1016/j.physletb.2011.06.034Subjects
Electroweak; Physics; CMS; FísicaNote
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMRights
© 2011 CERNEsta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
A measurement of Wγ and Zγ production in proton–proton collisions at √ s = 7 TeV is presented. Results are based on a data sample recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36 pb−1. The electron and muon decay channels of the W and Z are used. The total cross sections are measured for photon transverse energy Eγ T > 10 GeV and spatial separation from charged leptons in the plane of pseudorapidity and azimuthal angle ΔR(ℓ,γ) > 0.7, and with an additional dilepton invariant mass requirement of Mℓℓ > 50 GeV for the Zγ process. The following cross section times branching fraction values are found: σ(pp→Wγ + X) × B(W→ℓν) = 56.3 ± 5.0(stat.) ± 5.0(syst.)±2.3(lumi.) pb and σ(pp→Zγ + X)×B(Z→ℓℓ) = 9.4±1.0(stat.)±0.6(syst.)±0.4(lumi.) pb. These measurements are in agreement with standard model predictions. The first limits on anomalous WWγ, ZZγ, and Zγγ trilinear gauge couplings at √ s =7 TeV are set
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Google Scholar:CMS Collaboration
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Chatrchyan, S.
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Albajar Molera, Carmen
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Codispoti, G.
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Fernández Trocóniz Acha, Jorge
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