Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-05-14
Phys.Lett. B479 (2000) 224-229
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, one figure, more constraints added. To appear in Phys. Lett. B
Scientific paper
10.1016/S0370-2693(00)00325-7
We show how nonzero Majorana neutrino masses can be radiatively generated by extending the MSSM with leptoquark chiral multiplets without violating R-parity. It is found that, with these particles, the R-parity conservation does not imply lepton number conservation. Neutrino masses generated at a one-loop level are closely related to the down quark mass matrix. The ratio of neutrino mass-squared splittings $\Delta m^2_{\nu_2-\nu_1}/\Delta m^2_{\nu_3-\nu_2}$ obtained is naturally close to $\Delta m^2_{s-d}/\Delta m^2_{b-s}\sim 10^{-3}$ which is in the right region required to explain both the atmospheric neutrino data and the MSW solutions for the solar neutrino data.
Chua Chun-Khiang
He Xiao-Gang
Hwang Wei-Yan Pauchy
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