Physics
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvd..38.1030b&link_type=abstract
Physical Review D (Particles and Fields), Volume 38, Issue 4, 15 August 1988, pp.1030-1039
Physics
34
Elementary Particle Processes
Scientific paper
We calculate the cross sections for the neutral-current disintegration of deuterium by neutrinos and antineutrinos: ν+d-->ν'+n+p and ν¯+d-->ν¯'+n+p. We put special emphasis on estimates of the theoretical uncertainties of these cross sections. For 8B and hep solar neutrinos, the averaged cross sections are <σ(8B)>=4.1(1+/-0.1)×10-43 cm2 and <σ(hep)>=1.15(1+/-0.1)×10-42 cm2, respectively, where hep denotes 3He+p. The cross-section uncertainty is negligible, +/-1/2%, for the ratio of neutral-current to charged-current events. Independent of neutrino oscillations, the cross sections correspond to 4.5(1+/-0.38)×103 solar-neutrino events per year in the proposed one-kiloton Sudbury Neutrino Observatory if the standard solar model is correct. For a galactic supernova, the total number of neutral-current events expected in the Sudbury detector is about 103 (distance/8 kpc)-2; most of the signal is expected to arise from μ and τ neutrinos and antineutrinos. If either μ or τ neutrinos have a mass greater than 2×102 eV, then this mass should be measurable using the neutrino signal from a galactic supernova.
Bahcall John N.
Kubodera Kuniharu
Nozawa Satoshi
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