New Heavy Gauge Bosons Decaying to Pair of Electroweak Bosons at LHC and HL-LHC With Atlas

Abstract

The expected ATLAS Run 3 data set with time-integrated luminosity of 300 fb–1 and HL-LHC option of the LHC with L = 3000 fb–1 in the diboson channels in semileptonic final states are used to probe a simple benchmark model with an extended gauge sector, proposed by Altarelli et al. This model accommodates new charged W and neutral Z vector bosons with modified trilinear Standard Model gauge couplings, decaying into electroweak gauge boson pairs WZ or WW, where W/ Z decay semileptonically. We present upper limits on the mixing parameters, W –W  and Z– Z, by using the expected Run 3 data and HL-LHC options of the LHC.