Can gravity distinguish between Dirac and Majorana neutrinos?
نویسندگان
چکیده
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.
منابع مشابه
Comment on "Can gravity distinguish between Dirac and Majorana neutrinos?".
In a recent letter[1], Singh, Mobed and Papini (hereafter referred to as (I)) claim to show that the gravitaional field associated with the Lense-Thirring metric can distinguish between Dirac and Majorana neutrinos. According to these authors, the matrix element of the interaction Hamiltonian is significantly different, depending on the Dirac or Majorana nature of the neutrino. Here we point ou...
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عنوان ژورنال:
- Physical review letters
دوره 97 4 شماره
صفحات -
تاریخ انتشار 2006