Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos

Abstract

We propose new searches that exploit the unique signatures of decaying sterile neutrinos with masses below $M_W$ at the LHC, where they can be produced in rare decays of Standard Model gauge bosons. We show that for few-GeV-scale sterile neutrinos, the LHC experiments can probe mixing angles at the level of $10^{-4}-10^{-3}$ through powerful searches that look for prompt leptons in association with displaced lepton jets. For higher-mass sterile neutrinos, $i.e.$, $M_N\gtrsim 15$ GeV, Run II can explore similarly small mixing angles in prompt multilepton final states. This represents an improvement of up to two orders of magnitude in sensitivity to the sterile neutrino production rate.

12 pages, 10 figures. V2: references added, minor typos in manuscript corrected, version submitted to PRD

References in corpus (33)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Echoes of a Hidden Valley at Hadron Colliders
• Vector boson pair production at the LHC
• Distinguishing seesaw models at LHC with multi-lepton signals
• How to find neutral leptons of the nuMSM?
• Non-Abelian Dark Sectors and Their Collider Signatures
• Discovering the Higgs Through Highly-Displaced Vertices
• Phenomenology of Hidden Valleys at Hadron Colliders
• A possible symmetry of the $\nu$MSM
• QCD radiation in the production of heavy colored particles at the LHC
• Signatures for Majorana neutrinos at hadron colliders
• The GERDA experiment for the search of 0νββ decay in ^{76}Ge
• The nuMSM, leptonic asymmetries, and properties of singlet fermions
• Heavy neutrino signals at large hadron colliders
• Sterile neutrino dark matter as a consequence of nuMSM-induced lepton asymmetry
• Direct Bounds on Electroweak Scale Pseudo-Dirac Neutrinos from $\sqrt{s}=8$ TeV LHC Data
• Electroweak scale seesaw and heavy Dirac neutrino signals at LHC
• Search for Majorana neutrinos in $B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays
• Higgs boson decays to four fermions through an abelian hidden sector
• Search for anomalous production of events with three or more leptons in pp collisions at sqrt(s) = 8 TeV
• Testability of Type I Seesaw at the CERN LHC: Revealing the Existence of the B-L Symmetry
• Baryon Asymmetry of the Universe in the NuMSM
• Search for long-lived neutral particles decaying into lepton jets in proton--proton collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for anomalous production of prompt same-sign lepton pairs and pair-produced doubly charged Higgs bosons with $\sqrt{s}=8$ TeV $pp$ collisions using the ATLAS detector
• Search for heavy neutrinos in $K^{+}\to {\mu }^{+}{\nu }_H$ decays
• Resonant CP Violation due to Heavy Neutrinos at the LHC
• Limits on Vectorlike Leptons from Searches for Anomalous Production of Multi-Lepton Events
• Search for a light Higgs boson decaying to long-lived weakly-interacting particles in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• Looking for hints of a reconstructible seesaw model at the Large Hadron Collider

Cited by in corpus (35)

• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• The Present and Future Status of Heavy Neutral Leptons
• BBN for the LHC: constraints on lifetimes of the Higgs portal scalars
• Sterile neutrino searches via displaced vertices at LHCb
• Mapping the viable parameter space for testable leptogenesis
• Searches for Long-Lived Particles at the Future FCC-ee
• Distinguishing Dirac/Majorana Sterile Neutrinos at the LHC
• Heavy Neutral Leptons at Muon Colliders
• Implications of right-handed neutrinos in $B-L$ extended standard model with scalar dark matter
• Lepton-Jets and Low-Mass Sterile Neutrinos at Hadron Colliders
• Long-lived heavy neutral leptons with a displaced shower signature at CMS
• Heavy Neutrinos at the FCC-hh in the $U(1{)}_{B-L}$ Model
• Left-Right Symmetric Models at the High-Intensity Frontier
• Probing Neutrino Dirac Mass in Left-Right Symmetric Models at the LHC and Next Generation Colliders
• Majorana neutrino signals at Belle-II and ILC
• Neutrinoless double beta decay in Left-Right symmetric model with double seesaw mechanism
• Probing the Nature of Neutrinos with a New Force
• New Physics Search at the CEPC: a General Perspective
• Displaced Neutrino Jets at the LHeC
• CP Violation in Rare Lepton-Number-Violating $W$ Decays at the LHC
• Probing baryon asymmetry of the Universe at LHC and SHiP
• On the Minimal Mixing of Heavy Neutrinos
• Displaced Vertex signatures of a pseudo-Goldstone sterile neutrino
• Composite Dark Matter and Neutrino Masses from a Light Hidden Sector
• Boosted displaced decay of right-handed neutrinos at CMS, ATLAS and MATHUSLA
• Extraction of neutrino Yukawa parameters from displaced vertices of sneutrinos
• Generic tests of CP-violation in high-$p_{\text{T}}$ multi-lepton signals at the LHC and beyond
• H Marks the Spot: Searching for Exotic Production of Higgs + X to Map Out New Physics
• Quasi-Dirac neutrinos in the linear seesaw model
• Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino Mass Relevant Particles
• Long-lived Light Mediators in a Higgs Portal Model at the FCC-ee
• Soft supersymmetry breaking as the sole origin of neutrino masses and lepton number violation
• LHC signatures of sterile neutrinos in a minimal radiative extended seesaw framework
• Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the $U(1{)}_{B-L}$ model
• Probing the Seesaw Mechanism and Leptogenesis with the International Linear Collider