Upper limit on the mass of the electron neutrino

Details Upper limit on the mass of the electron neutrino Upper limit on the mass of the electron neutrino

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326..476b&link_type=abstract

Nature (ISSN 0028-0836), vol. 326, April 2, 1987, p. 476, 477. NSF-supported research.

Astronomy and Astrophysics

Astronomy

60

Cosmology, Electron Scattering, Neutrinos, Particle Energy, Particle Mass, Magellanic Clouds, Mass Distribution, Supernovae

Scientific paper

The historic detection by the Kamiokande-II collaboration and the IMB collaboration of neutrinos from the Large Magellanic Cloud (LMC) supernova provides the first opportunity to determine the mass mν,e, of the electron neutrino from astronomical observations. Here the authors show that mν,e is less than 11 eV, provided only that propagation effects have not conspired to sharpen, by more than a factor of two, the narrow pulse-width of neutrinos, observed by the Kamiokande-II collaboration from the LMC supernova. This result improves on the laboratory limit on mν,e, and confirms the view that electron neutrinos do not constitute the major component of the matter density of the universe.

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