We reexamine the transition magnetic moment solution to the solar neutrino problem. We argue that the absence of large time variations in the Super-Kamiokande rate provides strong evidence against spin-flavor flip in the solar convective zone. Spin-flavor flip could, however, occur in the primordial magnetic field in the radiative zone. We compute the longest-lived toroidal mode for this field and show that spin-flavor flip in the radiative zone can account for all available solar data.
ASJC Scopus subject areas
- Astronomy and Astrophysics