Updated constraints on and bosons decaying into bosonic and leptonic final states using the Run 2 ATLAS data
arXiv:2012.13930 · doi:10.1103/PhysRevD.103.053009
Abstract
The full ATLAS Run 2 data set with time-integrated luminosity of 139 fb in the diboson and dilepton channels is used to probe benchmark models with extended gauge sectors: the -motivated Grand Unification models, the left-right symmetric and the sequential standard model (EGM). These all predict neutral vector bosons, decaying into lepton pairs, , or into electroweak gauge boson pairs , where one in turn decays semileptonically. 95% C.L. exclusion limits on the resonance production cross section times branching ratio to electroweak gauge boson pairs and to lepton pairs in the mass range of 1 - 6 TeV are converted to constraints on the - mixing parameter and the heavy resonance mass. We present exclusion regions on the parameter space of the which are significantly extended compared to those obtained from the previous analyses performed with LHC data collected at 7 and 8 TeV in Run 1 as well as at 13 TeV in Run 2 at time-integrated luminosity of 36.1 fb and are the most stringent bounds to date. Also presented, from a similar analysis of electrically charged bosons arising in the EGM, which can decay through and , are limits on the - mixing parameter and the charged vector boson mass.
arXiv comment18 pages, many figures. arXiv admin note: substantial text overlap with arXiv:1912.02106, arXiv:1904.01432, arXiv:1809.08933. Version published in PRD
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