Constraints on decaying right-handed Majorana neutrinos from SN 1987A observations

Journal Article · Wed Mar 01 04:00:00 EST 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.39.1378· OSTI ID:6438383

Mohapatra, R N; Nussinov, S

We show that recently derived limits on the strength of right-handed interactions from SN 1987A observations hold even in the presence of mixing between left- and right-handed Majorana neutrinos and combined with cosmology lead to a strong bound on this neutrino mixing. By supplementing this with bounds on the flux of 512-keV x rays we are able to extend the bound on the left-right mixing parameter zeta further. In the conventional ''seesaw'' picture, the above results imply that the right-handed Majorana neutrino in left-right-symmetric theories must be heavier than 100 MeV or lighter than 65 eV. We then show that, using the results of neutrinoless double-..beta.. decay, these results rule out m/sub ..nu..//sub >//sub R//sub =/less than or equal to100 MeV without recourse to the seesaw assumption.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 6438383
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BETA DECAY
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