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Search for WW? and WZ? production and constraints on anomalous quartic gauge couplings in pp collisions at vs = 8??TeV

Abstract: A search for WV? 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 19.3??fb-1 collected in 2012 with the CMS detector at the LHC in pp collisions at vs = 8??TeV. An upper limit of 311 fb on the cross section for the WV? 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 WW?? or WWZ? quartic gauge boson couplings is found, this paper presents the first experimental limits on the dimension-eight parameter fT,0 and the CP-conserving WWZ? parameters ?W0 and ?WC. Limits are also obtained for the WW?? parameters aW0 and aWC.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Phys. Rev. D, Vol. 90, Num. 3, Pag. 032008 (2014)

Editorial: American Physical Society

 Fecha de publicación: 01/08/2014

Nº de páginas: 20

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.90.032008

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1103/PhysRevD.90.032008