摘要:

The models of neutrino mass are briefly reviewed. Since they give at best only qualitative features of the neutrino mass, additional constraints are considered. Cosmology restricts the masses of stable neutrinos and lifetimes of the unstable ones. Neutrino counting (Z‐width and primordial nucleosynthesis) restrict the number of neutrino flavors. Neutrino double beta decay constrains the mass eigenvalues. All these features have to be considered when new evidence (e.g., the recent suggestion of 17 keV neutrino) are placed in the broader context.

ISSN:0094-243X    

DOI:10.1063/1.41551

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

Antineutrinos can be produced in the sun by the spin‐flavor precession. The possibility of detecting such antineutrinos at the Sudbury Neutrino Observatory is examined.

ISSN:0094-243X    

DOI:10.1063/1.41482

出版商:AIP    

年代:1992

数据来源: AIP

摘要:

The cross sections for the reactions &ngr;e+13C→13N(gs)+e−and &ngr;&mgr;+13C→13N(gs)+&mgr;−are obtained for neutrino energies from threshold to 300 MeV. Electron scattering data and beta decay data as well as assumptions based on an impulse approximation and charge symmetry are used to obtain the form factors relevant to the calculation.

ISSN:0094-243X    

DOI:10.1063/1.41483

出版商:AIP    

年代:1992

数据来源: AIP