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Study of $WW\gamma$ and $WZ\gamma$ production in $pp$ collisions at $\sqrt{s} = 8$ TeV and search for anomalous quartic gauge couplings with the ATLAS experiment

2017-09-25Journal article Open access
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dc.contributor.authorATLAS collaboration (2876 authors)
dc.contributor.authorAguilar-Saavedra, Juan Antonio
dc.contributor.authorAmor Dos Santos, Susana Patricia
dc.contributor.authorAnjos, Nuno
dc.contributor.authorAraque, Juan Pedro
dc.contributor.authorCastro, Nuno Filipe
dc.contributor.authorConde Muiño, Patricia
dc.contributor.authorDa Cunha Sargedas De Sousa, Mario Jose
dc.contributor.authorFiolhais, Miguel
dc.contributor.authorGalhardo, Bruno
dc.contributor.authorGomes, Agostinho
dc.contributor.authorGonçalo, Ricardo
dc.contributor.authorJorge, Pedro
dc.contributor.authorMachado Miguens, Joana
dc.contributor.authorMaio, Amélia
dc.contributor.authorManeira, José
dc.contributor.authorOleiro Seabra, Luis Filipe
dc.contributor.authorOnofre, António
dc.contributor.authorPedro, Rute
dc.contributor.authorSantos, Helena
dc.contributor.authorSaraiva, João
dc.contributor.authorSilva, José
dc.contributor.authorTavares Delgado, Ademar
dc.contributor.authorVeloso, Filipe
dc.contributor.authorWolters, Helmut
dc.date.accessioned2019-02-04T13:30:51Z
dc.date.available2019-02-04T13:30:51Z
dc.date.issued2017-09-25
dc.date.updated2019-02-04T13:30:51Z
dc.description.abstractThis paper presents a study of $WW\gamma $ and $WZ\gamma $ triboson production using events from proton–proton collisions at a centre-of-mass energy of $\sqrt{s} = \text{8}\,\text{TeV}$ recorded with the ATLAS detector at the LHC and corresponding to an integrated luminosity of 20.2 fb$^{-1}$ . The $WW\gamma $ production cross-section is determined using a final state containing an electron, a muon, a photon, and neutrinos ( $e\nu \mu \nu \gamma $ ). Upper limits on the production cross-section of the $e\nu \mu \nu \gamma $ final state and the $WW\gamma $ and $WZ\gamma $ final states containing an electron or a muon, two jets, a photon, and a neutrino ( $e\nu jj\gamma $ or $\mu \nu jj\gamma $ ) are also derived. The results are compared to the cross-sections predicted by the Standard Model at next-to-leading order in the strong-coupling constant. In addition, upper limits on the production cross-sections are derived in a fiducial region optimised for a search for new physics beyond the Standard Model. The results are interpreted in the context of anomalous quartic gauge couplings using an effective field theory. Confidence intervals at 95% confidence level are derived for the 14 coupling coefficients to which $WW\gamma $ and $WZ\gamma $ production are sensitive.
dc.description.versionPeer Reviewed
dc.identifierEur.Phys.J. C77 (2017) 646 Eur. Phys. J. C 77, 646 (2017); DOI 10.1140/epjc/s10052-017-5180-3
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-017-5180-3
dc.identifier.urihttp://hdl.handle.net/10400.26/27394
dc.language.isoeng
dc.titleStudy of $WW\gamma$ and $WZ\gamma$ production in $pp$ collisions at $\sqrt{s} = 8$ TeV and search for anomalous quartic gauge couplings with the ATLAS experiment
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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