Search for a neutral gauge boson with nonuniversal fermion couplings in vector boson fusion processes in proton-proton collisions at $\sqrt{s}$ = 13 TeV

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 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 $\tau \tau$ or WW. The presence of a Z' boson decaying to ${\tau }^{+}{\tau }^{-}$ (W${}^{+}$W${}^{-}$) is excluded for masses up to 2.45 (1.60) TeV, depending on the Z' boson coupling to SM weak bosons, and assuming a Z' $\to$ ${\tau }^{+}{\tau }^{-}$ (W${}^{+}$W${}^{-}$) branching fraction of 50%.

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-21-015 (CMS Public Pages)

References in corpus (28)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Implications of CTEQ global analysis for collider observables
• Particle-flow reconstruction and global event description with the CMS detector
• The CMS trigger system
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Pileup Per Particle Identification
• Precision luminosity measurement in proton-proton collisions at $\sqrt{s}=$ 13 TeV in 2015 and 2016 at CMS
• Confronting lepton flavor universality violation in B decays with high-$p_T$ tau lepton searches at LHC
• Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
• Performance of missing transverse momentum reconstruction in proton-proton collisions at $\sqrt{s}=$ 13 TeV using the CMS detector
• Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Update of Parton Distributions at NNLO
• Search for resonant and nonresonant new phenomena in high-mass dilepton final states at $\sqrt{s}=$ 13 TeV
• Search for heavy narrow dilepton resonances in pp collisions at sqrt(s) = 7 TeV and sqrt(s) = 8 TeV
• The CMS statistical analysis and combination tool: COMBINE
• Search for narrow resonances in dilepton mass spectra in proton-proton collisions at sqrt(s) = 13 TeV and combination with 8 TeV data
• Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV
• Measurement of the ratios of branching fractions $\mathcal{R}(D^{\ast })$ and $\mathcal{R}(D^0)$
• Identification of hadronic tau lepton decays using a deep neural network
• Search for heavy resonances decaying to tau lepton pairs in proton-proton collisions at sqrt(s) = 13 TeV
• Performance of the CMS high-level trigger during LHC Run 2
• Search for high-mass resonances decaying into tau-lepton pairs in pp collisions at sqrt(s) = 7 TeV
• Probing the minimal $U(1{)}_X$ model at future electron-positron colliders via the fermion pair-production channel
• Searching for New Heavy Neutral Gauge Bosons using Vector Boson Fusion Processes at the LHC
• NNPDF1.0 parton set for the LHC