Distinguishing Dirac and Majorana neutrinos by their gravi-majoron decays

Abstract

Neutrinos may acquire small Dirac or Majorana masses by new low-energy physics in terms of the chiral gravitational anomaly, as proposed by Dvali and Funcke (2016). This model predicts fast neutrino decays, ${\nu }_i\to {\nu }_j+\varphi$ and ${\nu }_i\to {\bar{\nu }}_j+\varphi$, where the gravi-majorons $\varphi$ are pseudoscalar Nambu-Goldstone bosons. The final-state neutrino and antineutrino distributions differ depending on the Dirac or Majorana mass of the initial state. This opens a channel for distinguishing these cases, for example in the spectrum of high-energy astrophysical neutrinos. In particular, we put bounds on the neutrino lifetimes in the Majorana case, ${\tau }_2/m_2>1.1\times 10^{-3}(6.7\times 10^{-4})s/eV$ and ${\tau }_3/m_3>2.2\times 10^{-5}(1.3\times 10^{-4})s/eV$ at 90% CL for hierarchical (degenerate) masses, using data from experiments searching for antineutrino appearance from the Sun.

arXiv comment12 pages, 1 figure, matches the version published in PRD with the title "Distinguishing Dirac and Majorana neutrinos by their decays via Nambu-Goldstone bosons in the gravitational-anomaly model of neutrino masses"

References in corpus (55)

• Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data
• New CAST Limit on the Axion-Photon Interaction
• Neutrinoless Double-Beta Decay: Status and Prospects
• An improved upper limit on the neutrino mass from a direct kinematic method by KATRIN
• Axion Cosmology
• A White Paper on keV Sterile Neutrino Dark Matter
• The Neutrino Puzzle: Anomalies, Interactions, and Cosmological Tensions
• How to find neutral leptons of the nuMSM?
• Neutrino Mass Models
• Current Direct Neutrino Mass Experiments
• Current unknowns in the three neutrino framework
• Do solar neutrinos decay?
• Red giant bound on the axion-electron coupling reexamined
• Stronger limits on hypothetical Yukawa interactions in the 40--8000 nm range
• Theoretically palatable flavor combinations of astrophysical neutrinos
• A First Detection of the Acoustic Oscillation Phase Shift Expected from the Cosmic Neutrino Background
• Neutrinoless Universe
• Updated constraints on non-standard neutrino interactions from Planck
• Light sterile neutrinos
• A High Sensitivity Search for ${\bar{\nu }}_e$'s from the Sun and Other Sources at KamLAND
• See-Saw Energy Scale and the LSND Anomaly
• Status of Oscillation plus Decay of Atmospheric and Long-Baseline Neutrinos
• A tale of two modes: Neutrino free-streaming in the early universe
• Constraining invisible neutrino decays with the cosmic microwave background
• Interacting neutrinos in cosmology: exact description and constraints
• Third Generation Familons, B Factories, and Neutrino Cosmology
• Antineutrinos from Earth: A reference model and its uncertainties
• Detecting non-relativistic cosmic neutrinos by capture on tritium: phenomenology and physics potential
• Structure formation with strongly interacting neutrinos - implications for the cosmological neutrino mass bound
• The promising future of a robust cosmological neutrino mass measurement
• Small neutrino masses from gravitational $\theta$-term
• Testing decay of astrophysical neutrinos with incomplete information
• A combined treatment of neutrino decay and neutrino oscillations
• Three-generation flavor transitions and decays of supernova relic neutrinos
• Study of solar and other unknown anti-neutrino fluxes with Borexino at LNGS
• Addressing the Majorana vs. Dirac Question with Neutrino Decays
• Bounds on Neutrino-Scalar Yukawa Coupling
• Development of a Relic Neutrino Detection Experiment at PTOLEMY: Princeton Tritium Observatory for Light, Early-Universe, Massive-Neutrino Yield
• Solar Neutrinos and the Decaying Neutrino Hypothesis
• Measurement of the 2$\nu \beta \beta$ decay half-life of ${}^{150}$Nd and a search for 0$\nu \beta \beta$ decay processes with the full exposure from the NEMO-3 detector
• Solar neutrino oscillations and bounds on neutrino magnetic moment and solar magnetic field
• Lepton Flavorful Fifth Force and Depth-dependent Neutrino Matter Interactions
• Three-Form Gauging of axion Symmetries and Gravity
• Neutrino Decay and Solar Neutrino Seasonal Effect
• Neutrinoless Double Beta Decay in the Presence of Light Sterile Neutrinos
• Time-varying neutrino mass from a supercooled phase transition: current cosmological constraints and impact on the ${\Omega }_m$-${\sigma }_8$ plane
• Exploring a Non-Minimal Sterile Neutrino Model Involving Decay at IceCube and Beyond
• Electron Antineutrino Search at the Sudbury Neutrino Observatory
• Visible neutrino decay in the light of appearance and disappearance long baseline experiments
• On How Neutrino Protects the Axion
• Constraints on Neutrino Lifetime from the Sudbury Neutrino Observatory
• Matter effects in neutrino visible decay at future long-baseline experiments
• Tritium beta decay with additional emission of new light bosons
• How Unequal Fluxes of High Energy Astrophysical Neutrinos and Antineutrinos can Fake New Physics
• Sensitivity to neutrino-antineutrino transitions for boron neutrinos

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