SHORT-BASE-LINE NEUTRINO OSCILLATIONS AND (BETA-BETA)(0-NU) DECAY IN SCHEMES WITH AN INVERTED MASS-SPECTRUM

We have considered short-baseline neutrino oscillations, H-3 beta deca y, and (beta beta)(0 nu) decay in two schemes with an inverted mass sp ectrum and mixing of three and four massive neutrino fields. We have a nalyzed the results of the latest experiments on the search for oscill ations of terrestrial neutrinos and we have discussed the compatibilit y of the LSND indication in favor of neutrino oscillations with the re sults of the other experiments. In the framework of the models under c onsideration, it is shown that the observation of (beta beta)(0 nu) de cay could allow us to obtain information about the CP violation in the lepton sector.