The first search for a heavy neutral spin-1 gauge boson (Z^{'}) with nonuniversal fermion couplings produced via vector boson fusion processes and decaying to tau leptons or W bosons is presented. The analysis is performed using LHC data at sqrt[s]=13 TeV, collected from 2016 to 2018 with the CMS experiment and corresponding to an integrated luminosity of 138 fb^{-1}. The data are consistent with the standard model predictions. Upper limits are set on the product of the cross section for production of the Z^{'} boson and its branching fraction to ττ or WW. The presence of a Z^{'} boson decaying to τ^{+}τ^{-} (W^{+}W^{-}) is excluded for masses up to 2.45(1.60) TeV, depending on the Z^{'} boson coupling to standard model weak bosons, and assuming a Z^{'}→τ^{+}τ^{-} (W^{+}W^{-}) branching fraction of 50%.
Search for a Neutral Gauge Boson with Nonuniversal Fermion Couplings in Vector Boson Fusion Processes in Proton-Proton Collisions at \sqrt{s}=13TeV
Calzaferri, S.;Fiorina, D.;Montagna, P.;Riccardi, C.;Salvini, P.;Vai, I.;Vitulo, P.;Pelliccioni, M.;
2025-01-01
Abstract
The first search for a heavy neutral spin-1 gauge boson (Z^{'}) with nonuniversal fermion couplings produced via vector boson fusion processes and decaying to tau leptons or W bosons is presented. The analysis is performed using LHC data at sqrt[s]=13 TeV, collected from 2016 to 2018 with the CMS experiment and corresponding to an integrated luminosity of 138 fb^{-1}. The data are consistent with the standard model predictions. Upper limits are set on the product of the cross section for production of the Z^{'} boson and its branching fraction to ττ or WW. The presence of a Z^{'} boson decaying to τ^{+}τ^{-} (W^{+}W^{-}) is excluded for masses up to 2.45(1.60) TeV, depending on the Z^{'} boson coupling to standard model weak bosons, and assuming a Z^{'}→τ^{+}τ^{-} (W^{+}W^{-}) branching fraction of 50%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
