@misc{10481/32417, year = {1999}, url = {http://hdl.handle.net/10481/32417}, abstract = {We study the simplest Standard Model extension with only one extra right-handed neutrino. In this case there are two massless m1,2 and two massive m3,4 neutrinos, and in principle both solar and atmospheric anomalies can be described in two different scenarios, m3 ≪ m4 (scheme I) and m3 ≃ m4 (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.}, organization = {Work supported in part by Polish Committee for Scientific Research under Grants n. 2P03B08414, 2P03B04215 and CICYT under contract AEN96-1672 and Junta de Andalucía, under contract FQM101.}, publisher = {Jagiellonian University}, keywords = {Reconciling dark-matter}, keywords = {Right-handed neutrinos}, keywords = {Scale double-beta}, keywords = {Atmospheric neutrinos}, keywords = {Sterile neutrino}, keywords = {LSND experiment}, keywords = {Mass hierarchy}, keywords = {Lepton sector}, keywords = {CP violation}, title = {The minimal extension of the SM and the neutrino oscillation data}, author = {Águila Giménez, Francisco Del and Gluza, J. and Zrałek, M.}, }