Measurement of the production cross section for Zɣ to ν[overline ν]ɣ in pp collisions at √s = 7 TeV and limits on ZZɣ and Zɣɣ triple gauge boson couplings
Author(s)
CMS Collaboration; Bauer, Gerry P; Bendavid, Joshua L.; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Dutta, Valentina; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hahn, Kristian Allan; Klute, Markus; Luckey Jr, P David; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E; Roland, Gunther M; Rudolph, Matthew Scott; Stephans, George S. F.; Stoeckli, Fabian; Sumorok, Konstanty C; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, Roger; Wyslouch, Boleslaw; Xie, Si; Yang, Ming; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Chan, M.; Kim, Y.; Li, W.; ... Show more Show less
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A measurement of the Zɣ to ν[overline ν]ɣ cross section in pp collisions at root √s = 7 TeV is presented, using data corresponding to an integrated luminosity of 5.0 fb(⁻¹) collected with the CMS detector. This measurement is based on the observation of events with an imbalance of transverse energy in excess of 130 GeV and a single photon in the absolute pseudorapidity range | η | < 1.4 with transverse energy above 145 GeV. The Zɣ to ν[overline ν]ɣ production cross section is measured to be 21.1 +/- 4.2(stat.)+/- 4.3(syst.)+/- 0.5(lum.)fb, which agrees with the standard model prediction of 21.9 +/- 1.1 fb. The results are combined with the CMS measurement of Zɣ production in the l⁺l⁻ɣ final state (where l is an electron or a muon) to yield the most stringent limits to date on triple gauge boson couplings. |h₃[superscript Z]| < 2.7 x 10⁻³, |h₄(Z)| < 1.3 x 10⁻⁵ for ZZ gamma and |h₃[superscript ɣ]| < 2.9 x 10⁻³, vertical bar h₄ɣ vertical bar < 1.5 x 10⁻⁵ for Zɣɣ couplings.
Date issued
2013-10Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
Chatrchyan, S. et al. “Measurement of the production cross section for Zɣ to ν[overline ν]ɣ in pp collisions at √s = 7 TeV and limits on ZZɣ and Zɣɣ triple gauge boson couplings.” Journal of High Energy Physics 2013, 10 (October 2013): 164 © 2013 CERN for the benefit of the CMS collaboration
Version: Final published version
ISSN
1029-8479