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Measurement of electroweak-induced production of Wγ with two jets in pp collisions at √s=8 TeV and constraints on anomalous quartic 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.; ... mehr

A measurement of electroweak-induced production of Wγ and two jets is performed, where the W boson decays leptonically. The data used in the analysis correspond to an integrated luminosity of 19.7 fb−1 collected by the CMS experiment in √s =8 TeV proton-proton collisions produced at the LHC. Candidate events are selected with exactly one muon or electron, missing transverse momentum, one photon, and two jets with large rapidity separation. An excess over the hypothesis of the standard model without electroweak production of Wγ with two jets is observed with a significance of 2.7 standard deviations. The cross section measured in the fiducial region is 10.8 ± 4.1(stat) ± 3.4(syst) ± 0.3(lumi) fb, which is consistent with the standard model electroweak prediction. The total cross section for Wγ in association with two jets in the same fiducial region is measured to be 23.2 ± 4.3(stat) ± 1.7(syst) ± 0.6(lumi) fb, which is consistent with the standard model prediction from the combination of electroweak and quantum chromodynamics-induced processes. No deviations are observed from the standard model predictions and experimental limits on anomalous quartic gauge couplings fM,0−7/Λ4, fT,0−2/Λ4, and fT,5−7/Λ4 are set at 95% confidence level.

Verlagsausgabe §
DOI: 10.5445/IR/1000072080
Veröffentlicht am 11.12.2017
DOI: 10.1007/JHEP06(2017)106
Zitationen: 26
Web of Science
Zitationen: 15
Zitationen: 18
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Physik – Institut für Experimentelle Kernphysik (IEKP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1029-8479, 1126-6708
KITopen-ID: 1000072080
Erschienen in Journal of high energy physics
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Band 2017
Heft 6
Seiten Art. Nr.: 106
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagwörter Electroweak interaction; Hadron-Hadron scattering (experiments); protonproton scattering
Nachgewiesen in Scopus
Web of Science
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