Phys. Rev. Lett. 97, 041101 (2006) [4 pages]Can Gravity Distinguish between Dirac and Majorana Neutrinos?Received 4 June 2006; published 25 July 2006 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. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.97.041101
DOI:
10.1103/PhysRevLett.97.041101
PACS:
04.90.+e, 14.60.Pq, 97.60.Bw
See AlsoComment: José F. Nieves and Palash B. Pal, Comment on “Can Gravity Distinguish between Dirac and Majorana Neutrinos?”, Phys. Rev. Lett. 98, 069001 (2007). Reply: Dinesh Singh, Nader Mobed, and Giorgio Papini, Singh, Mobed, and Papini Reply:, Phys. Rev. Lett. 98, 069002 (2007). |
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