Neutrino mass bound in the standard scenario for supernova electronic antineutrino emission

Based on recent improvements of the supernova electron antineutrino emission model, we update the limit on neutrino mass from the SN1987A data collected by Kamiokande-II, IMB and Baksan. We derive the limit of 5.8 eV at 95% CL, that we show to be remarkably insensitive to the astrophysical uncertain...

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Published inAstroparticle physics Vol. 33; no. 5; pp. 287 - 291
Main Authors Pagliaroli, G., Rossi-Torres, F., Vissani, F.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2010
Subjects
Core collapse supernova
Neutrino mass
SN1987A
Core collapse supernova
SN1987A
Neutrino mass
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Summary:Based on recent improvements of the supernova electron antineutrino emission model, we update the limit on neutrino mass from the SN1987A data collected by Kamiokande-II, IMB and Baksan. We derive the limit of 5.8 eV at 95% CL, that we show to be remarkably insensitive to the astrophysical uncertainties. Also we evaluate the ultimate mass sensitivity of this method for a detector like Super-Kamiokande. We find that the bound lies in the sub-eV region, 0.8 eV at 95% CL being a typical outcome, competitive with the values that are presently probed in laboratory. However, this bound is subject to strong statistical fluctuations, correlated to the characteristics of the first few events detected. We briefly comment on the prospects offered by future detectors.
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ISSN:0927-6505
1873-2852
DOI:10.1016/j.astropartphys.2010.02.007