### The Minimal Extension of the SM and the Neutrino Oscillation DataThe Minimal Extension of the SM and the Neutrino Oscillation Data

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 Author Del Aguila, F. ♦ Gluza, J. ♦ Zralek, M. Source arXiv.org Content type Text File Format PDF Date of Submission 1999-10-25 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics Subject Keyword High Energy Physics - Phenomenology ♦ physics:hep-ph Abstract We study the simplest Standard Model estension with only one extra right-handed neutrino. In this case there are two massless $m_{1,2}$ and two massive $m_{3,4}$ neutrinos, and in principle both solar and atmospheric anomalies can be described in two different scenarios, $m_3 << m_4$ (scheme I) and $m_3 \simeq m_4$ (scheme II). However, neither bi-maximal mixing nor the dark matter problem are explained in this minimal extension. Only scheme II can accommodate simultaneously maximal mixing for atmospheric neutrinos and the small mixing angle MSW solution for the solar anomaly. This scenario can be tested in the BOREXINO experiment. Description Reference: Acta Phys.Polon.B30:3139-3147,1999 Educational Use Research Learning Resource Type Article Page Count 9