Abstract
The conflict between observation and theoretical prediction of the flux of electron neutrinos from the sun has advanced in the past year from being merely difficult to understand to being impossible to live with. We review here attempts to explore the nature of the conflict, to seek possible ways out of it, and to inquire into additional experiments that have the capability either of resolving the conflict or at least of deciding which branch of physics or astrophysics is responsible for it.
Highlights
The conQict between observation and theoretical prediction of the Qux of electron neutrinos from the sun has advanced in the past year from being merely dificult to understand to being impossible to live with
We review here attempts to explore the nature of the conQict, to seek possible ways out of it, and to inquire into additional experiments that have the capability either of resolving the conQict or at least of deciding which branch of physics or astrophysics is responsible for it
The dominant contributions are from the beta decays of 'Be and '8, which are extremely sensitive to the central temperature of the solar model adopted
Summary
VIRGINIA TRIMBLE* AND FREDERICK REINES DepartnMnt of Ptsysies, IIniversity of California, Irvine ttZ664. Bahcall and Sears (1972) have reviewed the physics and astrophysics of neutrino production by the sun. If the interior of the sun contained no elements heavier than hydrogen and helium ( reducing the opacity) or if the B neutrinos just are not produced for some reason, we would predict a capture rate of about 2 SNU. II that a generous upper limit to the observed capture rate is 1 SNU This is strictly inconsistent with the predictions of any solar model whose central heavy element content is the same as that at the solar surface and which is producing energy at a constant rate, provided that we have understood all the relevant nuclear and weak interaction physics.
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