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Updated: Aug 6, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Can gravity distinguish between Dirac and Majorana neutrinos?
Dinesh Singh1, Nader Mobed, Giorgio Papini
1Department of Physics, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada. singhd@uregina.ca
Abstract:
We show that spin-gravity interaction can distinguish between Dirac and Majorana neutrino wave packets propagating in a Lense-Thirring background. Using time-independent perturbation theory and the gravitational phase to generate a perturbation Hamiltonian with spin-gravity coupling, we show that the associated matrix element for the Majorana neutrino differs significantly from its Dirac counterpart. This difference can be demonstrated through significant gravitational corrections to the neutrino oscillation length for a two-flavor system, as shown explicitly for SN 1987A.
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