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  • Aaboud, M. (author)

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

  • E-article/E-chapterEnglish2017

Publisher, publication year, extent ...

  • Springer2017

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  • LIBRIS-ID:22159071
  • http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-337095uri
  • urn:nbn:se:uu:diva-337095urn
  • 10.1140/epjc/s10052-017-5180-3doi

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  • Language:English

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  • <p>ATLAS Collaboration, for complete list of authors see https://doi.org/10.1140/epjc/s10052-017-5180-3</p>
  • Published
  • gratis
  • This 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 root s = 8 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 upsilon mu upsilon gamma). Upper limits on the production cross-section of the e upsilon mu upsilon gamma final state and theWW gamma and WZ gamma final states containing an electron or a muon, two jets, a photon, and a neutrino (e upsilon j j gamma or mu upsilon j j 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 newphysics 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.

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  • Bergeås, Elin Kuutmann (author)
  • Bokan, Petar (author)
  • Brenner, Richard (author)
  • Ekelöf, Tord (author)
  • Ellert, Mattias (author)
  • Ferrari, Arnaud (author)
  • Gradin, P.O. Joakim (author)
  • Isacson, M.F. (author)
  • Mårtensson, M.U.F. (author)
  • Öhman, Henrik (author)
  • Rangel-Smith, Camilla (author)
  • Sales De Bruin, P.H. (author)
  • Zwalinski, L. (author)
  • Uppsala universitetTeknisk-naturvetenskapliga vetenskapsområdet (publisher)

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  • Part of/supplement to:channel record
  • In:VärdpublikationEuropean Physical Journal C77:91434-6044

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