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

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posted on 2023-06-09, 08:32 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration and
This paper presents a study of WW? and WZ? triboson production using events from proton–proton collisions at a centre-of-mass energy of vs=8TeV recorded with the ATLAS detector at the LHC and corresponding to an integrated luminosity of 20.2 fb-1. The WW? production cross-section is determined using a final state containing an electron, a muon, a photon, and neutrinos (e?µ??). Upper limits on the production cross-section of the e?µ?? final state and the WW? and WZ? final states containing an electron or a muon, two jets, a photon, and a neutrino (e?jj? or µ?jj?) 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? and WZ? production are sensitive.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

European Physical Journal C: Particles and Fields

ISSN

1434-6044

Publisher

Springer Verlag

Issue

9

Volume

77

Page range

646

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-11-01

First Open Access (FOA) Date

2017-11-01

First Compliant Deposit (FCD) Date

2017-11-01

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