Heavy Majorana Neutrinos from $W\gamma$ Fusion at Hadron Colliders

Abstract

Vector boson fusion processes become increasingly more important at higher collider energies and for probing larger mass scales due to collinear logarithmic enhancements of the cross section. In this context, we revisit the production of a hypothetic heavy Majorana neutrino $(N)$ at hadron colliders. Particular attention is paid to the fusion process $W\gamma \to N{\ell }^{\pm }$. We systematically categorize the contributions from an initial state photon in the elastic, inelastic, and deeply inelastic channels. Comparing with the leading channel via the Drell-Yan production $q{\bar{q}}^{\prime }\to W^{\ast }\to N{\ell }^{\pm }$ at NNLO in QCD, we find that the $W\gamma$ fusion process becomes relatively more important at higher scales, surpassing the DY mechanism at $m_N\sim 1\text{TeV}(770\text{GeV})$ at the 14 TeV LHC (100 TeV VLHC). We investigate the inclusive heavy Majorana neutrino signal, including QCD corrections, and quantify the Standard Model backgrounds at future hadron colliders. We conclude that, with the currently allowed mixing $|V_{\mu N}{|}^2<6\times 10^{-3}$, a $5\sigma$ discovery can be made via the same-sign dimuon channel for $m_N=530(1070)$ GeV at the 14 TeV LHC (100 TeV VLHC) after 1 ab${}^{-1}$. Reversely, for $m_N=500$ GeV and the same integrated luminosity, a mixing $|V_{\mu N}{|}^2$ of the order $1.1\times 10^{-3}(2.5\times 10^{-4})$ may be probed.

46 pages, three appendices, 17 figures, 12 tables. Updated to match published version. Enjoy

References in corpus (10)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• FeynRules - Feynman rules made easy
• Phenomenology with Massive Neutrinos
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• Non-unitarity of the leptonic mixing matrix: Present bounds and future sensitivities
• Signatures for Majorana neutrinos at hadron colliders
• Direct Bounds on Electroweak Scale Pseudo-Dirac Neutrinos from $\sqrt{s}=8$ TeV LHC Data
• NLO QCD corrections to tri-boson production
• Search for leptonic decays of W' bosons in pp collisions at sqrt(s) = 7 TeV
• Search for electromagnetic properties of the neutrinos at the LHC

Cited by in corpus (51)

• The Present and Future Status of Heavy Neutral Leptons
• Vector boson fusion at multi-TeV muon colliders
• Neutrino Jets from High-Mass $W_R$ Gauge Bosons in TeV-Scale Left-Right Symmetric Models
• The Effective Vector Boson Approximation in High-Energy Muon Collisions
• gamma-UPC: Automated generation of exclusive photon-photon processes in ultraperipheral proton and nuclear collisions with varying form factors
• Searches for Long-Lived Particles at the Future FCC-ee
• Search for long-lived heavy neutral leptons with displaced vertices in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Heavy neutral leptons in effective field theory and the high-luminosity LHC
• Heavy Neutral Leptons at Muon Colliders
• Reinterpreting the ATLAS bounds on heavy neutral leptons in a realistic neutrino oscillation model
• Review of searches for vector-like quarks, vector-like leptons, and heavy neutral leptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV at the CMS experiment
• Majorana Neutrinos in Same-Sign $W^{\pm }{W}^{\pm }$ Scattering at the LHC: Breaking the TeV Barrier
• Collider Searches for Heavy Neutral Leptons: beyond simplified scenarios
• Heavy neutrinos at future linear e${}^{+}$e${}^{-}$ colliders
• Lepton-Jets and Low-Mass Sterile Neutrinos at Hadron Colliders
• Vector Boson Scattering Processes: Status and Prospects
• Electroweak Phase Transition and Gravitational Waves in the Type-II Seesaw Model
• Heavy neutrinos from gluon fusion
• Assessment of the Dimension-5 Seesaw Portal and Impact of Exotic Higgs Decays on Non-Pointing Photon Searches
• Leptonic anomalous magnetic moments in $\nu$SMEFT
• Neutrino seesaw models at one-loop matching: Discrimination by effective operators
• Searches for dark matter signals in simplified models at future hadron colliders
• Search for heavy neutral leptons in final states with electrons, muons, and hadronically decaying tau leptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Probing heavy Majorana neutrinos and the Weinberg operator through vector boson fusion processes in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• New Benchmark Models for Heavy Neutral Lepton Searches
• Search for Majorana neutrinos in same-sign $WW$ scattering events from $pp$ collisions at $\sqrt{s}=13$ TeV
• Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Monojet search for heavy neutrinos at future $Z$-factories
• Heavy Neutral Leptons at the Electron-Ion Collider
• A quantitative study on helicity inversion in Majorana neutrino decays at the LHC
• Exploring CP-violation, via heavy neutrino oscillations, in rare B meson decays at Belle II
• Probing HNL-ALP couplings at colliders
• Search for heavy Majorana neutrinos at electron-proton colliders
• Heavy Neutral Leptons -- Advancing into the PeV domain
• Doubly Charged Higgs Boson Production at Hadron Colliders II: A Zee-Babu Case Study
• Sensitivity Reach on the Heavy Neutral Leptons and $\tau$-Neutrino Mixing $|U_{\tau N}{|}^2$ at the HL-LHC
• Roles of sterile neutrinos in particle physics and cosmology
• Search for long-lived heavy neutral leptons with lepton flavour conserving or violating decays to a jet and a charged lepton
• Radiative Symmetry breaking, Cosmic Strings and Observable Gravity Waves in $U(1{)}_R$ symmetric $SU(5)\times U(1{)}_{\chi }$
• Modelling Heavy Neutral Leptons in Accelerator Beamlines
• Exclusive doubly charged Higgs boson pair production in $pp$ collisions at the LHC
• Search for long-lived heavy neutral leptons in proton-proton collision events with a lepton-jet pair associated with a secondary vertex at $\sqrt{s}$ = 13 TeV
• ALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals
• Search for heavy Majorana neutrinos in the $\tau$ final state at proton-electron colliders
• Searches for Heavy Neutral Leptons at FCC-ee in final states including a muon
• Improving heavy Dirac neutrino prospects at future hadron colliders using machine learning
• Timing-based mass measurement of exotic long-lived particles at the FCC-ee
• Probe the Mixing Parameter $|V_{\tau N}{|}^2$ for Heavy Neutrinos
• Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino Mass Relevant Particles
• Search for heavy neutral leptons in decays of W bosons produced in 13 TeV pp collisions using prompt signatures in the ATLAS detector
• Simulation of the process $e^{+}{e}^{-}\to W^{+}{W}^{-}$ with the heavy right-handed neutrino exchange at 1 TeV future lepton colliders