Neutral-current reactions of solar and supernova neutrinos on deuterium
We calculate the cross sections for the neutral-current disintegration of deuterium by neutrinos and antineutrinos: ..nu..+d..--> nu..'+n+p and nu-bar+d..-->..nu-bar'+n+p. We put special emphasis on estimates of the theoretical uncertainties of these cross sections. For /sup 8/B and hep solar neutrinos, the averaged cross sections are = 4.1(1 +- 0.1) x 10/sup -43/ cm/sup 2/ and = 1.15(1 +- 0.1) x 10/sup -42/ cm/sup 2/, respectively, where hep denotes /sup 3/He+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) x 10/sup 3/ 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 10/sup 3/ (distance/8 kpc)/sup -2/; most of the signal is expected to arise from ..mu.. and tau neutrinos and antineutrinos. If either ..mu.. or tau neutrinos have a mass greater than 2 x 10/sup 2/ eV, then this mass should be measurable using the neutrino signal from a galactic supernova.
- Research Organization:
- Institute for Advanced Study, Princeton, New Jersey 08540
- OSTI ID:
- 6855067
- Journal Information:
- Phys. Rev. D; (United States), Vol. 38:4
- Country of Publication:
- United States
- Language:
- English
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GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NEUTRINO-DEUTERON INTERACTIONS
FRAGMENTATION
SOLAR NEUTRINOS
NEUTRAL-CURRENT INTERACTIONS
ANTINEUTRINOS
CHARGED-CURRENT INTERACTIONS
COUPLING CONSTANTS
CROSS SECTIONS
ENERGY SPECTRA
NEUTRINO OSCILLATION
NEUTRONS
NUCLEAR MODELS
PROTONS
SUPERNOVAE
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BARYONS
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ERUPTIVE VARIABLE STARS
FERMIONS
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINOS
NUCLEONS
PARTICLE INTERACTIONS
RADIATIONS
SOLAR PARTICLES
SOLAR RADIATION
SPECTRA
STARS
STELLAR RADIATION
VARIABLE STARS
640101* - Astrophysics & Cosmology- Cosmic Radiation
645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties
653001 - Nuclear Theory- Nuclear Structure
Moments
Spin
& Models