First results of the observation of {sup 7}Be solar neutrinos with the BOREXINO detector

Journal Article · Sun Mar 15 04:00:00 EDT 2009 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S106377880903017X· OSTI ID:21405978

The results of a direct measurement of the counting rate for solar neutrinos from the electron-capture process on {sup 7}Be, {sup 7}Be(e{sup -}, {nu}{sub e}){sup 7}Li(E{sub {nu} }= 0.862 MeV), with the low-background scintillation detector BOREXINO are presented. This is the first ever real-time observation of a signal from solar neutrinos of energy below 1 MeV. The counting rate for monoenergetic beryllium neutrinos in the BOREXINO detector proved to be 47 {+-} 7 (stat.) {+-} 12 (syst.) counts/(day x 100 t), which is in agreement with the predictions of the standard solar model and the hypothesis of neutrino oscillations in matter with parameters in the LMA region.

• OSTI ID: 21405978
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 3 Vol. 72; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALKALINE EARTH ISOTOPES
BERYLLIUM 7
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
CAPTURE
COUNTING RATES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE
ELECTRON CAPTURE RADIOISOTOPES
ELECTRON NEUTRINOS
ELECTRONS
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
FERMIONS
HYPOTHESIS
ISOTOPES
LEPTONS
LIGHT NUCLEI
LITHIUM 7
LITHIUM ISOTOPES
MASSLESS PARTICLES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NEUTRINO OSCILLATION
NEUTRINOS
NUCLEI
ODD-EVEN NUCLEI
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
SCINTILLATION COUNTERS
SIGNALS
SOLAR NEUTRINOS
SOLAR PARTICLES
SOLAR RADIATION
STABLE ISOTOPES
STAR MODELS
STELLAR RADIATION