Sensitivity prospects for lepton-trijet signals in the $\nu$SMEFT at the LHeC

Abstract

The observation of neutrino oscillations and masses motivates the extension of the standard model with right handed neutrinos, leading to heavy neutrino states possibly in the electroweak scale, which could be impacted by new high-scale weakly coupled physics. A systematic tool for studying these interactions is the neutrino-extended standard model effective field theory $\nu$SMEFT. In this work we study the prospects of the future LHeC electron-proton collider to discover or constrain the $\nu$SMEFT interactions, performing the first dedicated and realistic analysis of the well known lepton-trijet signals, both for the lepton flavor violating $p{e}^{-}\to {\mu }^{-}+3\mathrm{j}$ (LFV) and the lepton number violating $p{e}^{-}\to {\mu }^{+}+3\mathrm{j}$ (LNV) channels, for HNLs masses in the electroweak scale range: $100\mathrm{GeV}\le {\mathrm{m}}_{\mathrm{N}}\le 500\mathrm{GeV}$. The obtained sensitivity prospects show that the LHeC with $100\mathrm{f}{\mathrm{b}}^{-1}$ luminosity could be able to probe the scenario of a heavy $N$ and constrain the effective couplings to a region of the parameter space as tight as the bounds that are currently considered for the $\mathcal{O}(10)$GeV scale masses, with effective couplings of $\mathcal{O}(10^{-1})$ for NP scale $\Lambda =1\mathrm{TeV}$.

arXiv commentFinal version accepted for publication in EPJC. 8 figures, 3 tables. Equations A4 and A5 corrected

References in corpus (68)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• FastJet user manual
• Asymptotic formulae for likelihood-based tests of new physics
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• MadGraph 5 : Going Beyond
• UFO - The Universal FeynRules Output
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• Novel Supersymmetric SO(10) Seesaw Mechanism
• Patterns of Deviation from the Standard Model
• The Large Hadron-Electron Collider at the HL-LHC
• Sterile neutrino searches at future $e^{-}{e}^{+}$, $pp$, and $e^{-}p$ colliders
• Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
• Operators up to Dimension Seven in Standard Model Effective Field Theory Extended with Sterile Neutrinos
• The Present and Future Status of Heavy Neutral Leptons
• Dipole portal to heavy neutral leptons
• General Neutrino Interactions from an Effective Field Theory Perspective
• Right-handed neutrino magnetic moments
• Dimension Seven Operators in Standard Model with Right handed Neutrinos
• The seesaw portal in testable models of neutrino masses
• Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Sterile neutrinos and neutrinoless double beta decay in effective field theory
• Probing right handed neutrinos at the LHeC and lepton colliders using fat jet signatures
• Operator Bases in Effective Field Theories with Sterile Neutrinos: $d\le 9$
• Long-lived Sterile Neutrinos at the LHC in Effective Field Theory
• The Large Hadron Electron Collider
• Broadening the Higgs Boson with Right-Handed Neutrinos and a Higher Dimension Operator at the Electroweak Scale
• Higgs phenomenology as a probe of sterile neutrinos
• One-loop matching in the SMEFT extended with a sterile neutrino
• Effective portals to heavy neutral leptons
• Probes of the Standard Model effective field theory extended with a right-handed neutrino
• Majorana neutrinos production at LHeC in an effective approach
• Majorana neutrino decay in an Effective Approach
• Search for Long-Lived Heavy Neutrinos at the LHC with a VBF Trigger
• Long-lived Sterile Neutrinos at Belle II in Effective Field Theory
• The see-saw portal at future Higgs Factories
• Probing right-handed neutrinos dipole operators
• Long-lived heavy neutral leptons at the LHC: four-fermion single-$N_R$ operators
• Assessment of the Dimension-5 Seesaw Portal and Impact of Exotic Higgs Decays on Non-Pointing Photon Searches
• Heavy Neutrinos and Lepton Number Violation in lp Colliders
• Leptonic anomalous magnetic moments in $\nu$SMEFT
• Effective Majorana neutrino decay
• Long-lived heavy neutral leptons from mesons in effective field theory
• Lepton-Trijet and Displaced Vertex Searches for Heavy Neutrinos at Future Electron-Proton Colliders
• Reinterpretation of searches for long-lived particles from meson decays
• Angular and polarization trails from effective interactions of Majorana neutrinos at the LHeC
• Heavy Neutral Leptons at the Electron-Ion Collider
• Final taus and initial state polarization signatures from effective interactions of Majorana neutrinos at future $e^{+}{e}^{-}$ colliders
• Minimal flavor violation in the see-saw portal
• Sterile neutrinos with non-standard interactions in $\beta$- and $0\nu \beta \beta$-decay experiments
• A short course in effective Lagrangians
• Re-examining $N_R$-EFT Upto Dimension Six
• Majorana Dark Matter
• Search for heavy Majorana neutrinos at electron-proton colliders
• The Geometric $\nu$SMEFT: Operators and Connections
• Displaced Neutrino Jets at the LHeC
• Sterile neutrino and leptonic decays of the pseudoscalar mesons
• Heavy Majorana Neutrino Production at Future $ep$ Colliders
• Light sterile neutrinos and lepton-number-violating kaon decays in effective field theory
• Angular and polarization observables for Majorana-mediated B decays with effective interactions
• Seesaw Type I and III at the LHeC
• Majorana neutrinos with effective interactions in B decays
• Searching for charged lepton flavor violation at $ep$ colliders
• Effects of Majorana Physics on the UHE ${\nu }_{\tau }$ Flux Traversing the Earth

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