摘要
Abstract In recent years, a nonzero value for the neutrino mixing angle θ13 has been successively measured by the international famous reactor oscillation experiments, which is greater than 5 standard deviations. Our study is in the framework of the MSSM, where baryon and lepton numbers are local gauged symmetries （BLMSSM）. This model can generate three tiny neutrino masses at the tree level through TeV scale seesaw mechanism. In our paper, we analyze the neutrino masses and their corresponding mixing angles with a ＂top-down＂ method, assuming neutrino mass spectrum with normal ordering （NO） and inverted ordering （IO）.
基金
Supported by the National Natural Science Foundation of China under Grant Nos.11275036,11047002,11347606
the open project of State Key Laboratory of Mathematics-Mechanization under Grant No.Y3KF311CJ1
the Natural Science Foundation of Hebei Province under Grant Nos.A2013201277,A2011201118
Natural Science Fund of Hebei University under Grant Nos.2011JQ05,2012-242
