Lepton flavor violation and non-unitary lepton mixing in low-scale type-I seesaw

Abstract

Within low-scale seesaw mechanisms, such as the inverse and linear seesaw, one expects (i) potentially large lepton flavor violation (LFV) and (ii) sizeable non-standard neutrino interactions (NSI). We consider the interplay between the magnitude of non-unitarity effects in the lepton mixing matrix, and the constraints that follow from LFV searches in the laboratory. We find that NSI parameters can be sizeable, up to percent level in some cases, while LFV rates, such as that for μ-> e γ, lie within current limits, including the recent one set by the MEG collaboration. As a result the upcoming long baseline neutrino experiments offer a window of opportunity for complementary LFV and weak universality tests.

14 pages, 14 composite figures and 1 table. v2: minor changes, references added. Accepted for publication in JHEP

References in corpus (5)

• Non-Standard Neutrino Interactions with Matter from Physics Beyond the Standard Model
• Global neutrino data and recent reactor fluxes: status of three-flavour oscillation parameters
• Phenomenological Consequences of sub-leading Terms in See-Saw Formulas
• Minimal flavour violation extensions of the seesaw
• Neutrino physics overview

Cited by in corpus (82)

• Neutrinos and Collider Physics
• The Phenomenology of Right Handed Neutrinos
• Non standard neutrino interactions
• Non-Unitarity, sterile neutrinos, and Non-Standard neutrino Interactions
• New Production Mechanism for Heavy Neutrinos at the LHC
• Heavy Neutrinos and Lepton Flavour Violation in Left-Right Symmetric Models at the LHC
• Global Constraints on a Heavy Neutrino
• On the description of non-unitary neutrino mixing
• The low-scale approach to neutrino masses
• Prospects of Heavy Neutrino Searches at Future Lepton Colliders
• Prospects for Beyond the Standard Model Physics Searches at the Deep Underground Neutrino Experiment
• Indirect searches for sterile neutrinos at a high-luminosity Z-factory
• Sterile neutrinos in leptonic and semileptonic decays
• A search for two body muon decay signals
• White Paper on New Opportunities at the Next-Generation Neutrino Experiments (Part 1: BSM Neutrino Physics and Dark Matter)
• Tree-level lepton universality violation in the presence of sterile neutrinos: impact for $R_K$ and $R_{\pi }$
• Neutrino masses, dominant neutrinoless double beta decay, and observable lepton flavor violation in left-right models and SO(10) grand unification with low mass ${\mathbf{W}}_{\mathbf{R}},{\mathbf{Z}}_{\mathbf{R}}$ bosons
• GeV-scale neutrinos: interactions with mesons and DUNE sensitivity
• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• New ambiguity in probing CP violation in neutrino oscillations
• Future CEvNS experiments as probes of lepton unitarity and light-sterile neutrinos
• Recent probes of standard and non-standard neutrino physics with nuclei
• Constraining Flavor Changing Interactions from LHC Run-2 Dilepton Bounds with Vector Mediators
• Standard and non-standard neutrino-nucleus reactions cross sections and event rates to neutrino detection experiments
• Effect of steriles states on lepton magnetic moments and neutrinoless double beta decay
• Non-unitary neutrino mixing in short and long-baseline experiments
• Vacuum Stability Constraints on the Minimal Singlet TeV Seesaw Model
• Bounds on the triplet fermions in type-III seesaw and implications for collider searches
• Towards deconstructing the simplest seesaw mechanism
• Dirac-Phase Thermal Leptogenesis in the extended Type-I Seesaw Model
• Resonant CP violation in rare tau decay
• $R_K$ and $R_{K^{\ast }}$ in an Aligned 2HDM with Right-Handed Neutrinos
• Inverse Seesaw Mechanism in Nonsupersymmetric SO(10), Proton Lifetime, Nonunitarity Effects, and a Low-mass Z' Boson
• On the origin of matter in the Universe
• Sneutrino Dark Matter in Low-scale Seesaw Scenarios
• Gravitational footprints of massive neutrinos and lepton number breaking
• An $A_4$ realization of inverse seesaw: neutrino masses, ${\theta }_{13}$ and leptonic non-unitarity
• Inverse seesaw in $A_5^{\prime }$ modular symmetry
• Dark Radiative Inverse Seesaw Mechanism
• Rare meson decays with three pairs of quasi-degenerate heavy neutrinos
• Dark Matter and the elusive ${\mathbf{Z}}^{\prime }$ in a dynamical Inverse Seesaw scenario
• Nuclear aspects of neutral current non-standard $\nu$-nucleus reactions and the role of the exotic ${\mu }^{-}\to e^{-}$ transitions experimental limits
• Testing triplet fermions at the electron-positron and electron-proton colliders using fat jet signatures
• Proposal for generalised Supersymmetry Les Houches Accord for see-saw models and PDG numbering scheme
• Neutrino mass and invisible Higgs decays at the LHC
• $A_4$ realization of Linear Seesaw and Neutrino Phenomenology
• Global oscillation data analysis on the $3\nu$ mixing without unitarity
• Minimal lepton flavor violating realizations of minimal seesaw models
• Phenomenology of the simplest linear seesaw mechanism
• Probing the doubly-charged Higgs with Muonium to Antimuonium Conversion Experiment
• Seesaw parametrization for n right-handed neutrinos
• Proton decay and new contribution to neutrino-less double beta decay in SO(10) with low-mass Z-prime boson, observable n-nbar oscillation, lepton flavor violation, and rare kaon decay
• Towards testing the unitarity of the 3X3 lepton flavor mixing matrix in a precision reactor antineutrino oscillation experiment
• W-mass Anomaly in the Simplest Linear Seesaw Mechanism
• New mechanism for Type-II seesaw dominance in SO(10) with low-mass Z-prime, RH neutrinos, and verifiable LFV, LNV, and proton decay
• Cosmogenic neutrino fluxes under the effect of active-sterile secret interactions
• Linear seesaw mechanism from dark sector
• Observable features in (ultra)high energy neutrinos due to active-sterile secret interactions
• Electroweak Breaking and Higgs Boson Profile in the Simplest Linear Seesaw Model
• Non-Unitarity at DUNE and T2HK with Charged and Neutral Current Measurements
• A constrained supersymmetric left-right model
• A potential scenario for the Majorana neutrino detection at future lepton colliders
• Charged lepton-flavor violating processes and suppression of nonunitary mixing effects in low-scale seesaw models
• High Scale Type-II Seesaw, Dominant Double Beta Decay within Cosmological Bound and Verifiable LFV Decays in SU(5)
• Axion Like Particles and the Inverse Seesaw Mechanism
• Probing non-unitary neutrino mixing via long-baseline neutrino oscillation experiments based at J-PARC
• CP violation in bipair neutrino mixing
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• Lepton flavor violation in inverse seesaw model
• Leptonic neutral-current probes in a short-distance DUNE-like setup
• Unveiling Neutrino Mysteries with $\Delta (27)$ Symmetry
• Resonant leptogenesis in inverse see-saw framework with modular $S_4$ symmetry
• Linear seesaw leptogenesis before/after electroweak symmetry breaking
• Neutrino CP Measurement in the Presence of RG Running with Mismatched Momentum Transfers
• $A_5$ symmetry and deviation from Golden Ratio mixing with charged lepton flavor violation
• Exploring the feasibility of the charged lepton flavor violating decay $\mu \to e+\gamma$ in inverse and linear seesaw mechanisms with $A_4$ flavour symmetry
• All-flavor constraints on nonstandard neutrino interactions and generalized matter potential with three years of IceCube DeepCore data
• Rescuing leptogenesis in inverse seesaw models with the help of non-Abelian flavor symmetries
• Update on non-unitary mixing in the recent NO$\nu$A and T2K data
• Impact of unitarity violation on sensitivity of the leptonic CP phase at Hyper-Kamiokande and DUNE
• Lepton flavor violation and seesaw symmetries
• Leptogenesis in the littlest inverse seesaw model