Recent diboson and multiboson results in ATLAS

Recent measurements of the associated production of two or three massive vector bosons in proton-proton collisions at the Large Hadron Collider, collected by the ATLAS detector at a centre-of-mass energy of \(\sqrt{s} = 13\) TeV, are reported. The diboson analyses target the production and decay mod...

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Bibliographic Details
Published inarXiv.org
Main Author Cristinziani, Markus
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 21.06.2019
Subjects
Bosons
Couplings
Large Hadron Collider
Particle collisions
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Summary:Recent measurements of the associated production of two or three massive vector bosons in proton-proton collisions at the Large Hadron Collider, collected by the ATLAS detector at a centre-of-mass energy of \(\sqrt{s} = 13\) TeV, are reported. The diboson analyses target the production and decay modes \(WW\rightarrow e\nu_e\mu\nu_\mu\), \(WZ \rightarrow \ell^{\prime} \nu \ell \ell\,(\ell = e, \mu)\), \(ZZ \rightarrow \ell\ell\nu\nu\), and the \(4\ell\) final state. Fiducial inclusive cross sections are compared to state-of-the-art Standard Model calculations and several unfolded differential distributions are measured. In the \(WZ\) channel, the helicities of the \(W\) and \(Z\) bosons are probed. Results are interpreted in terms of limits on anomalous gauge couplings in the framework of effective field theories. Finally, the first evidence for the production of three massive vector bosons (\(WWW\), \(WWZ\), \(WZZ\)) is presented.
ISSN:2331-8422