Effective portals to heavy neutral leptons

Abstract

The existence of right-handed neutrinos, or heavy neutral leptons (HNLs), is strongly motivated by the observation of neutrino masses and mixing. The mass of these new particles could lie below the electroweak scale, making them accessible to low-energy laboratory experiments. Additional new physics at high energies can mediate new interactions between the Standard Model particles and HNLs, and is most conveniently parametrized by the neutrino Standard Model Effective Field Theory, or $\nu$SMEFT for short. In this work, we consider the dimension six $\nu$SMEFT operators involving one HNL field in the mass range of $\mathcal{O}(1)$ MeV $<M_N<\mathcal{O}(100)$ GeV. By recasting existing experimental limits on the production and decay of new light particles, we constrain the Wilson coefficients and new physics scale of each operator as a function of the HNL mass.

arXiv comment28 pages + appendices, 12 figures.v2: published in JHEP, no relevant changes. Bounds and plots can be found in https://github.com/mhostert/Heavy-Neutrino-Limits

References in corpus (83)

• A Unified Approach to the Classical Statistical Analysis of Small Signals
• Minimal Flavour Violation: an effective field theory approach
• The Search for Heavy Majorana Neutrinos
• The Standard Model as an Effective Field Theory
• Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
• Novel Supersymmetric SO(10) Seesaw Mechanism
• Updated global analysis of neutrino oscillations in the presence of eV-scale sterile neutrinos
• Low energy effects of neutrino masses
• LEP Shines Light on Dark Matter
• Serendipity in dark photon searches
• Global constraints on heavy neutrino mixing
• Left-Right Symmetry Breaking in NJL Approach
• Phenomenology of GeV-scale Heavy Neutral Leptons
• Non-Unitarity, sterile neutrinos, and Non-Standard neutrino Interactions
• Do experiments suggest a hierarchy problem?
• Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
• Photon Events with Missing Energy in e+e- Collisions at sqrt{s} = 130 to 209 GeV
• Operators up to Dimension Seven in Standard Model Effective Field Theory Extended with Sterile Neutrinos
• Dipole portal to heavy neutral leptons
• Testing sterile neutrino extensions of the Standard Model at future lepton colliders
• Global Constraints on a Heavy Neutrino
• General Neutrino Interactions from an Effective Field Theory Perspective
• Right-handed neutrino magnetic moments
• Double Bangs from New Physics in IceCube
• Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Dimension Seven Operators in Standard Model with Right handed Neutrinos
• Combining Experimental and Cosmological Constraints on Heavy Neutrinos
• Improved BBN constraints on Heavy Neutral Leptons
• The Neutrino Magnetic Moment Portal: Cosmology, Astrophysics, and Direct Detection
• Restrictions on the lifetime of sterile neutrinos from primordial nucleosynthesis
• The seesaw portal in testable models of neutrino masses
• Limits on the Mixing of Tau Neutrino to Heavy Neutrinos
• Experimental bounds on sterile neutrino mixing angles
• Cosmological and astrophysical bounds on a heavy sterile neutrino and the KARMEN anomaly
• Implications for New Physics from Fine-Tuning Arguments: I. Application to SUSY and Seesaw Cases
• Improved Bhabha cross section at LEP and the number of light neutrino species
• An Extended Analysis of Heavy Neutral Leptons during Big Bang Nucleosynthesis
• A frequentist analysis of three right-handed neutrinos with GAMBIT
• The Irreducible Axion Background
• NA62 sensitivity to heavy neutral leptons in the low scale seesaw model
• Sterile neutrinos and neutrinoless double beta decay in effective field theory
• GeV-scale neutrinos: interactions with mesons and DUNE sensitivity
• Long-lived Sterile Neutrinos at the LHC in Effective Field Theory
• Operator Bases in Effective Field Theories with Sterile Neutrinos: $d\le 9$
• Revisiting cosmological bounds on sterile neutrinos
• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• Broadening the Higgs Boson with Right-Handed Neutrinos and a Higher Dimension Operator at the Electroweak Scale
• Search for Heavy Neutrinos in $\pi \to \mu \nu$ Decay
• One-loop matching in the SMEFT extended with a sterile neutrino
• Big Bang Nucleosynthesis constraints on sterile neutrino and lepton asymmetry of the Universe
• Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
• Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment
• Supernova signals of light dark matter
• Probes of the Standard Model effective field theory extended with a right-handed neutrino
• Reinterpreting the ATLAS bounds on heavy neutral leptons in a realistic neutrino oscillation model
• Heavy neutral leptons below the kaon mass at hodoscopic detectors
• Majorana neutrinos production at LHeC in an effective approach
• Revisiting the production of ALPs at B-factories
• An allowed window for heavy neutral leptons below the kaon mass
• Majorana neutrino decay in an Effective Approach
• On the invisible decays of the Upsilon and J/Psi resonances
• Decay Constant Ratios $f_{{\eta }_c}/f_{J/\psi }$ and $f_{{\eta }_b}/f_{{\rm Y}}$
• Long-lived Sterile Neutrinos at Belle II in Effective Field Theory
• The MicroBooNE Experiment, the NuMI Absorber, and Heavy Neutral Leptons
• The see-saw portal at future Higgs Factories
• Probing right-handed neutrinos dipole operators
• Assessment of the Dimension-5 Seesaw Portal and Impact of Exotic Higgs Decays on Non-Pointing Photon Searches
• Effective Majorana neutrino decay
• Leptonic anomalous magnetic moments in $\nu$SMEFT
• Long-lived heavy neutral leptons from mesons in effective field theory
• New Benchmark Models for Heavy Neutral Lepton Searches
• Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos
• Reinterpretation of searches for long-lived particles from meson decays
• The effective field theory of low scale see-saw at colliders
• Angular and polarization trails from effective interactions of Majorana neutrinos at the LHeC
• Minimal flavor violation in the see-saw portal
• Sterile neutrinos with non-standard interactions in $\beta$- and $0\nu \beta \beta$-decay experiments
• Re-examining $N_R$-EFT Upto Dimension Six
• The Geometric $\nu$SMEFT: Operators and Connections
• 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
• Revisiting PS191 limits on sterile neutrinos

Cited by in corpus (22)

• Disentangling left and right-handed neutrino effects in $B\to K^{(\ast )}\nu \nu$
• Supernova Limits on Muonic Dark Forces
• Long-lived neutral fermions at the DUNE near detector
• Probing Heavy Neutrino Magnetic Moments at the LHC using Long-Lived Particle Searches
• Search for heavy neutral leptons in decays of W bosons using leptonic and semi-leptonic displaced vertices in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Confronting the low-scale seesaw and leptogenesis with neutrinoless double beta decay
• Search for Hidden Neutrinos at the European Spallation Source: the SHiNESS experiment
• Assessing WGC Compatibility in ModMax Black Holes via Photon Spheres Analysis and WCCC Validation
• Sensitivity prospects for lepton-trijet signals in the $\nu$SMEFT at the LHeC
• No Hiding in the Dark: Cosmological Bounds on Heavy Neutral Leptons with Dark Decay Channels
• Constraining the SMEFT Extended with Sterile Neutrinos at FCC-ee
• Detecting LHC Neutrinos at Surface Level
• Right handed neutrino production from $Z^{\prime }$ interactions in forward search experiments
• Testable dark matter solution within the seesaw mechanism
• Mass Reconstruction of Heavy Neutral Leptons from Stopped Mesons
• Future collider sensitivities to $\nu$SMEFT interactions
• From oversimplified to overlooked: the case for exploring Rich Dark Sectors
• Long-Lived HNLs via ALP Portal at the LHC
• Cosmic Overture Echoed in a Stellar Final Act: Implications of Nanohertz Gravitational Waves for Core Collapse Supernova Neutrinos
• Heavy Neutral Lepton searches at an ICARUS-like detector using NuMI beam
• Sensitivity of $W$-boson measurements to low-mass right-handed neutrinos
• Impact of dim-6 $\nu$SMEFT operators on low-scale leptogenesis