Distinguishing Dirac and Majorana neutrinos by their gravi-majoron decays

3 May 2019Lena FunckeGeorg RaffeltEdoardo Vitagliano

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, $\nu_i\to\nu_j+\phi$ and $\nu_i\to\bar{\nu}_j+\phi$, where the gravi-majorons $\phi$ are pseudoscalar Nambu-Goldstone bosons... (read more)

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