Experimental limits on the radiative decay of SN 1987A neutrinos. [SN 1987A]
Journal Article
·
· Phys. Rev. Lett.; (United States)
Data from the Gamma-Ray Spectrometer on the Solar Maximum Mission satellite has been searched for excess ..gamma..-ray emission coincident with the approx.10-s neutrino burst from supernova 1987A. The absence of a detectable signal allows us to state that the energy in MeV ..gamma.. rays during the burst is <10/sup -10/ of that in supernova neutrinos above 9 MeV. Direct interpretation limits the lifetime of any radiatively unstable massive neutrinos to tau/sub v//sub i//m/sub v//sub i/greater than or equal to6.3 x 10/sup 15/ (B/sub ..gamma..//sub i/f/sub ..gamma..//sub i/) s/eV for m/sub v//sub i/<20 eV, where B/sub ..gamma..//sub i/ and f/sub ..gamma..//sub i/ are the branching ratio for ..gamma.. decay of species i and the fraction of decays giving detectable ..gamma.. rays, respectively.
- Research Organization:
- Department of Physics and Space Science Center, University of New Hampshire, Durham, New Hampshire 03824
- OSTI ID:
- 6534630
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:5; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC RADIATION
COSMIC RAY SOURCES
DATA
DATA ANALYSIS
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
EXPERIMENTAL DATA
FERMIONS
GALAXIES
INFORMATION
IONIZING RADIATIONS
LEPTONS
LIMITING VALUES
MAGELLANIC CLOUDS
MASSLESS PARTICLES
NEUTRINOS
NUMERICAL DATA
PRIMARY COSMIC RADIATION
RADIATIONS
RADIATIVE DECAY
STARS
SUPERNOVAE
VARIABLE STARS
Radio & X-Ray Sources
645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
COSMIC GAMMA BURSTS
COSMIC GAMMA SOURCES
COSMIC RADIATION
COSMIC RAY SOURCES
DATA
DATA ANALYSIS
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
EXPERIMENTAL DATA
FERMIONS
GALAXIES
INFORMATION
IONIZING RADIATIONS
LEPTONS
LIMITING VALUES
MAGELLANIC CLOUDS
MASSLESS PARTICLES
NEUTRINOS
NUMERICAL DATA
PRIMARY COSMIC RADIATION
RADIATIONS
RADIATIVE DECAY
STARS
SUPERNOVAE
VARIABLE STARS