KIT | KIT-Bibliothek | Impressum

Measurement of the W⁺W⁻ cross section in pp collisions at √s= 8 TeVand limits on anomalous gauge couplings

CMS Collaboration; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Knünz, V.; ... mehr



Abstract (englisch): A measurement of the W boson pair production cross section in proton-proton collisions at s √ =8 TeV is presented. The data collected with the CMS detector at the LHC correspond to an integrated luminosity of 19.4fb -1. The W + W − candidates are selected from events with two charged leptons, electrons or muons, and large missing transverse energy. The measured W + W − cross section is 60.1±0.9(stat)±3.2(exp)±3.1(theo)±1.6(lumi)\,pb=60.1±4.8\,pb 60.1±0.9(stat)±3.2(exp)±3.1(theo)±1.6(lumi)\,pb=60.1±4.8\,pb, consistent with the standard model prediction. The W + W − cross sections are also measured in two different fiducial phase space regions. The normalized differential cross section is measured as a function of kinematic variables of the final-state charged leptons and compared with several perturbative QCD predictions. Limits on anomalous gauge couplings associated with dimension-six operators are also given in the framework of an effective field theory. The corresponding 95 % confidence level intervals are −5.7<c WWW /Λ 2 <5.9TeV −2, −11.4<c W /Λ 2 <5.4TeV −2, −29.2<c B /Λ 2 <23.9TeV −2, in the HISZ basis.


Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1140/epjc/s10052-016-4219-1
ISSN: 1434-6044
URN: urn:nbn:de:swb:90-595804
KITopen ID: 1000059580
Erschienen in The European physical journal / C
Band 76
Heft 7
Seiten 401
Lizenz CC BY 3.0 DE: Creative Commons Namensnennung 3.0 Deutschland
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft KITopen Landing Page