Neutrinoless Quadruple Beta Decay

Abstract

We point out that lepton number violation is possible even if neutrinos are Dirac particles. We illustrate this by constructing a simple model that allows for lepton number violation by four units only. As a consequence, neutrinoless double beta decay is forbidden, but neutrinoless quadruple beta decay is possible: $(A,Z)\to (A,Z+4)+4e^{-}$. We identify three candidate isotopes for this decay, the most promising one being Nd-150 due to its high $Q_{0\nu 4\beta }$-value of 2 MeV. Analogous processes, such as neutrinoless quadruple electron capture, are also possible. The expected lifetimes are extremely long, and experimental searches are challenging.

5 pages, 4 figures. Minor changes, accepted by EPL

Cited by in corpus (51)

• Low-Energy Effective Field Theory below the Electroweak Scale: Operators and Matching
• Low-Energy Effective Field Theory below the Electroweak Scale: Anomalous Dimensions
• Unbroken B-L Symmetry
• Neutrino Non-Standard Interactions: A Status Report
• Pathways to Naturally Small Dirac Neutrino Masses
• Neutrinoless Double Beta Decay
• Gauge $B-L$ Model with Residual $Z_3$ Symmetry
• Dirac Neutrinos and Dark Matter Stability from Lepton Quarticity
• Seesaw roadmap to neutrino mass and dark matter
• Dirac neutrinos from flavor symmetry
• Majorana Higgses at colliders
• Observing Dirac neutrinos in the cosmic microwave background
• Inclusive Nucleon Decay Searches as a Frontier of Baryon Number Violation
• Naturally Small Dirac Neutrino Mass with Intermediate $SU(2{)}_L$ Multiplet Fields
• The $B-L$ Scotogenic Models for Dirac Neutrino Masses
• Dirac or Inverse Seesaw Neutrino Masses from Gauged B - L Symmetry
• Seesaw Dirac neutrino mass through dimension-6 operators
• CP Violation from Flavor Symmetry in a Lepton Quarticity Dark Matter Model
• Simplest Radiative Dirac Neutrino Mass Models
• Can one ever prove that neutrinos are Dirac particles?
• $Z^{\prime }$ Portal Dark Matter in $B-L$ Scotogenic Dirac Model
• Interpretation of Lepton Flavor Violation
• Scotogenic $U(1{)}_{\chi }$ Dirac Neutrinos
• Leptogenesis with Lepton-Number-Violating Dirac Neutrinos
• The symmetry approach to quark and lepton masses and mixing
• Scotogenic Cobimaximal Dirac Neutrino Mixing from $\Delta (27)$ and $U(1{)}_{\chi }$
• Systematic classification of two loop d = 4 Dirac neutrino mass models and the Diracness-dark matter stability connection
• Characters and Group Invariant Polynomials of (Super)fields: Road to "Lagrangian"
• Two-Loop $Z_4$ Dirac Neutrino Masses and Mixing, with Self-Interacting Dark Matter
• Testing a lepton quarticity flavor theory of neutrino oscillations with the DUNE experiment
• Search for neutrinoless quadruple-$\beta$ decay of ${}^{150}$Nd with the NEMO-3 detector
• Radiative Dirac Neutrino Mass with Dark Matter and it's implication to $0\nu 4\beta$ in the $U(1{)}_{B-L}$ extension of the Standard Model
• Low-energy effective field theory below the electroweak scale: one-loop renormalization in the 't Hooft-Veltman scheme
• Computing Tools for Effective Field Theories
• Canonical seesaw implication for two-component dark matter
• Dirac neutrinos in the 2HDM with restrictive Abelian symmetries
• Testing Dirac leptogenesis with the cosmic microwave background and proton decay
• $\Delta L\ge 4$ processes
• Evaluation of radon adsorption efficiency values in xenon with activated carbon fibers
• Five Texture Zeros for Dirac Neutrino Mass Matrices
• The role of residual symmetries in dark matter stability and the neutrino nature
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• Dirac leptogenesis from asymmetry wash-in via scatterings
• Uncovering the Root of LEFT in SMEFT
• Hypothesis about Enrichment of Solar System
• Search for triple and quadruple beta decay of ${}^{150}$Nd
• Leptonic Dark Matter with Scalar Dilepton Mediator
• Search for neutrinoless quadruple beta decay of ${}^{136}$Xe in XMASS-I
• Neutrinoless double beta decay without Majorana neutrinos
• Theory and phenomenology of Dirac neutrinos
• Probing High Scale Dirac Leptogenesis via Gravitational Waves from Domain Walls