Solar neutrino oscillations and bounds on neutrino magnetic moment and solar magnetic field

by Evgeny AKHMEDOV (IST, Lisbon)

Thursday 28 Nov 2002, 14:00 → 15:00 Europe/Zurich

TH Auditorium (CERN)

If the observed deficit of solar neutrinos is due to neutrino oscillations, neutrino conversions caused by the interaction of their transition magnetic moments with the solar magnetic field (spin-flavour precession) can still be present at a subdominant level. In that case, the combined action of neutrino oscillations and spin-flavour precession can lead to a small but observable flux of electron antineutrinos coming from the sun. Non-observation of these nuebar's could set limits on neutrino transition moment and the strength and coordinate dependence of the solar magnetic field. I discuss in detail the corresponding limits that can be derived from the present and future experimental data (LSD, Super-Kamiokande and KamLAND) assuming that the solution of the solar neutrino problem is LMA, LOW or VO.

Note: In the case of unavailability of the TH Conference Room, this talk will take place in Room 40-S2-B01