Confronting spin flavor solutions of the solar neutrino problem with current and future solar neutrino data

por Omar Miranda (Departamento de Fisica, CINVESTAV-IPN)

miércoles 18 dic. 2002 12:00 → 13:00 Europe/Madrid

Sala de Juntas del IFIC (Edf. Institutos de Investigación)

A global analysis of spin-flavour precession (SFP) solutions to thesolar neutrino problem is given.We fix the neutrino magnetic moment to be $10^{-11}$ Bohr magneton,with a corresponding optimum self-consistent magneto-hydrodynamicsmagnetic field profile with maximum strength of 80 KGauss in theconvective zone.We find that no LOW-quasi-vacuum or vacuum solutions are present at 3sigma. In addition to the standard LMA oscillation solution, thereare two SFP solutions, in the resonant (RSFP) and non-resonant (NRSFP)regimes. These two SFP solutions have a goodness of fit slightlybetter than the LMA oscillation solution. We also discuss the role of solar anti-neutrino searches in the fit.Should KamLAND confirm the LMA solution, the SFP solutions may at bestbe present at a sub-leading level. In the event LMA is not the solution realized in nature,then experiments such as Borexino can help distinguishing LMA from theNRSFP solution and the simplest RSFP solution with no mixing.