Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-07-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, LaTeX, no figures. Talk given at the XXXth Rencontres de Moriond on Electroweak and Unified Theories, Les Arcs, Savoi
Scientific paper
10.1143/PTPS.123.467
With latest experimental data the solar neutrino problem enters new phase when crucial aspects of the problem can be formulated in an essentially (solar) model independent way. Original neutrino fluxes can be considered as free parameters to be found from the solar neutrino experiments. Resonance flavour conversion gives the best fit of all experimental results. Already existing data allow one to constraint both the neutrino parameters and the original neutrino fluxes. The reconciliation of the solution of the solar neutrino problem with other neutrino mass hints (atmospheric neutrino problem, hot dark matter etc.) may require the existence of new very light singlet fermion. Supersymmetry can provide a framework within which the desired properties of such a light fermion follow naturally. The existence of the fermion can be related to axion physics, mechanism of $\mu$-term generation etc..
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