A search for WVγ triple vector boson production is presented based on events containing a W boson decaying to a muon or an electron and a neutrino, a second V (W or Z) boson, and a photon. The data correspond to an integrated luminosity of 19.3fb-1 collected in 2012 with the CMS detector at the LHC in pp collisions at s=8TeV. An upper limit of 311 fb on the cross section for the WVγ production process is obtained at 95% confidence level for photons with a transverse energy above 30 GeV and with an absolute value of pseudorapidity of less than 1.44. This limit is approximately a factor of 3.4 larger than the standard model predictions that are based on next-to-leading order QCD calculations. Since no evidence of anomalous WWγγ or WWZγ quartic gauge boson couplings is found, this paper presents the first experimental limits on the dimension-eight parameter fT,0 and the CP-conserving WWZγ parameters κ0W and κCW. Limits are also obtained for the WWγγ parameters a0W and aCW. © 2014 CERN, for the CMS Collaboration.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Search for WWγ and WZγ production and constraints on anomalous quartic gauge couplings in pp collisions at s =8TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 90(3) [10.1103/PhysRevD.90.032008].

Search for WWγ and WZγ production and constraints on anomalous quartic gauge couplings in pp collisions at s =8TeV

DINARDO, MAURO EMANUELE;FIORENDI, SARA;GEROSA, RAFFAELE ANGELO;GHEZZI, ALESSIO;GOVONI, PIETRO;LUCCHINI, MARCO TOLIMAN;MANZONI, RICCARDO ANDREA;MARTELLI, ARABELLA;MARZOCCHI, BADDER;MORONI, LUIGI;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;De Guio, F;
2014

Abstract

A search for WVγ triple vector boson production is presented based on events containing a W boson decaying to a muon or an electron and a neutrino, a second V (W or Z) boson, and a photon. The data correspond to an integrated luminosity of 19.3fb-1 collected in 2012 with the CMS detector at the LHC in pp collisions at s=8TeV. An upper limit of 311 fb on the cross section for the WVγ production process is obtained at 95% confidence level for photons with a transverse energy above 30 GeV and with an absolute value of pseudorapidity of less than 1.44. This limit is approximately a factor of 3.4 larger than the standard model predictions that are based on next-to-leading order QCD calculations. Since no evidence of anomalous WWγγ or WWZγ quartic gauge boson couplings is found, this paper presents the first experimental limits on the dimension-eight parameter fT,0 and the CP-conserving WWZγ parameters κ0W and κCW. Limits are also obtained for the WWγγ parameters a0W and aCW. © 2014 CERN, for the CMS Collaboration.
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics
English
2014
90
3
032008
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2014). Search for WWγ and WZγ production and constraints on anomalous quartic gauge couplings in pp collisions at s =8TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 90(3) [10.1103/PhysRevD.90.032008].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/154061
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