Results 181 to 190 of about 625,042 (205)

The problems with solar neutrinos

AIP Conference Proceedings, 1995
Nuclear fusion processes in the center of the sun produce neutrinos as well as photons. Detection of these neutrinos constrains both the intrinsic properties of the neutrinos, such as their mass and mixing, and the models of the sun used to calculate the solar neutrino flux.
openaire   +2 more sources

The Solar Neutrino Problem

Publications of the Astronomical Society of Australia, 1975
A few years ago Fowler (1972) published a paper in which he proposed two ‘desperate explanations’ for the solar neutrino problem. Desperation continues to be characteristic of the subject, for, in spite of many investigations over recent years, there is still no unambiguously successful model satisfying all the observational features of the Sun and ...
openaire   +2 more sources

The solar neutrino problem

Pramana, 2000
I review the solar neutrino problem and what it has taught us about the Sun and fundamental physics.
openaire   +2 more sources

Pseudo Dirac neutrinos and the solar-neutrino problem

Physical Review D, 1992
Observational consequences of the pseudo-Dirac-neutrino hypothesis of Kobayashi, Lim, and Nojiri are examined in the context of the solar-neutrino problem. Detailed calculations are performed to obtain expected rates at the $^{37}\mathrm{Cl}$, Kamiokande II, and $^{71}\mathrm{Ga}$ detectors.
Hisakazu Minakata, Hiroshi Nunokawa
openaire   +3 more sources

THE SOLAR NEUTRINO PROBLEM AND BOUNDS ON SOLAR NEUTRINO FLUXES

Modern Physics Letters A, 1995
We review the current status of the solar neutrino problem. A survey of the experiments and their results are given, and solar physics crucial to the understanding of these results are discussed. Semi-empirical methods are used to derive bounds on the fluxes of the three most important components (pp, 7Be and 8B) of the solar neutrino spectrum. The 8B
Waikwok Kwong, S. P. Rosen
openaire   +2 more sources

New tools for solving the solar-neutrino problem.

Physical Review Letters, 1986
Neutrino (..nu..) excitation of nuclear levels (NUEX) via neutral currents is shown to be crucially important to the solar-..nu.. problem as a method of detecting ..nu..'s regardless of flavor.
Raghavan, Pakvasa, Brown
semanticscholar   +1 more source

Solar Neutrino Problem

Publications of the Astronomical Society of Australia, 1973
A major crisis facing theoretical nuclear astronomers and physicists today is the apparently very low flux of neutrinos emitted by the Sun. Davis et al. report a measurement of 1.5 ± 1 s.n.u. (1 s.n.u. = 10−36 capture/Cl37/sec) which is a factor of 6 or so smaller than the theoretically predicted values.
openaire   +2 more sources

A solar neutrino problem?

Physics World, 1990
Solar neutrino experiments, designed to detect the neutrinos generated in the nuclear fusion processes in the Sun, provide the only direct way to test our basic understanding as to 'why the sun is shining'. For almost 20 years, the only experiment of this kind was the chlorine detector in the Homestake gold mine, South Dakota, USA, run by Ray Davis ...
openaire   +1 more source

Solar-neutrino problem: Some old solutions reexamined.

Physical Review D, Particles and fields, 1991
Recent experimental data confirm the solar-neutrino problem and imply new neutrino physics. We review some of the less discussed proposals to solve this problem: (1) maximal vacuum mixing of three neutrino flavors, (2) vacuum oscillation of two neutrino ...
Acker, Pakvasa, Pantaleone
semanticscholar   +1 more source

Proton Capture by Be 7 and the Solar Neutrino Problem

, 1973
It is shown theoretically that the $^{7}\mathrm{Be}(p,\ensuremath{\gamma})^{8}\mathrm{B}$ reaction cross section contains substantial contributions from $p$ and $d$ partial waves at laboratory energies, and extrapolations to stellar energies based on the
R. Robertson
semanticscholar   +1 more source