GALLEX: First results and implications for neutrino physics

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:6890266

Hartman, F X

The GALLEX experiment, located in the Gran Sasso underground laboratory, completed its first measurements of the production rate of Ge-71 from Ga-71 due to solar neutrinos. The GALLEX detector is uniquely sensitive to the low energy neutrinos produced by proton-proton fusion in the center of the Sun. From these first measurements, which cover a period of exposure of 295 days, a rate of 83 [plus minus] 19 (stat.) [plus minus] 8 (syst.) (1 [sigma]) SNU [1 [times] 10[sup ([minus]36)] captures/target atom - second] is reported. This initial result is two standard deviations below the solar model calculations. The implications of a neutrino deficit in terms of neutrino flavor oscillations is summarized.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6890266
• Report Number(s): BNL-48251; CONF-9207140-3; ON: DE93004908
• Resource Relation: Conference: Stanford Linear Accelerator Center (SLAC) summer institute on particle accelerators: third family and the physics of flavor, Stanford, CA (United States), 13-24 Jul 1992
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
SOLAR NEUTRINOS
NEUTRINO DETECTION
GALLIUM 71
NEUTRINO OSCILLATION
WEINBERG ANGLE
DETECTION
ELEMENTARY PARTICLES
FERMIONS
GALLIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
MASSLESS PARTICLES
NEUTRINOS
NUCLEI
ODD-EVEN NUCLEI
RADIATION DETECTION
RADIATIONS
SOLAR PARTICLES
SOLAR RADIATION
STABLE ISOTOPES
STELLAR RADIATION
662320* - Neutrino Interactions- (1992-)
440104 - Radiation Instrumentation- High Energy Physics Instrumentation