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Measurement of the cross section for electroweak production of Zγ in association with two jets and constraints on anomalous quartic gauge couplings in proton–proton collisions at √s=8 TeV

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

Abstract:

A measurement is presented of the cross section for the electroweak production of a Z boson and a photon in association with two jets in proton–proton collisions at √s = 8 TeV. The Z bosons are identified through their decays to electron or muon pairs. The measurement is based on data collected with the CMS detector corresponding to an integrated luminosity of 19.7 fb1. The electroweak contribution has a significance of 3.0 standard deviations, and the measured fiducial cross section is 1.86+0.900.75 (stat) +0.340.26 (syst) + 0.05 (lumi) fb, while the summed electroweak and quantum chromodynamic total cross section in the same region is observed to be 5.94+1.531.35 (stat)+0.430.37 (syst) + 0.13 (lumi) fb. Both measurements are consistent with the leading-order standard model predictions. Limits on anomalous quartic gauge couplings are set based on Ζγ the mass distribution.

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: 0370-2693, 1873-2445
urn:nbn:de:swb:90-702211
KITopen-ID: 1000070221
Erschienen in Physics letters / B
Verlag North-Holland Publishing
Band 770
Seiten 380-402
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagwörter CMS, Physics, aQGC, Electroweak production
Nachgewiesen in Dimensions
Web of Science
Scopus
OpenAlex

Volltext §
DOI: 10.5445/IR/1000070221
Originalveröffentlichung
DOI: 10.1016/j.physletb.2017.04.071
Scopus
Zitationen: 51
Web of Science
Zitationen: 44
Dimensions
Zitationen: 38
Seitenaufrufe: 277
seit 04.05.2018
Downloads: 285
seit 02.09.2017
Cover der Publikation
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