Neutrino mass matrices with two vanishing elements/cofactors
نویسندگان
چکیده
منابع مشابه
Textures for neutrino mass matrices.
We give a classification of heavy Majorana neutrino mass matrices with up to three texture zeroes, assuming the Dirac masses of the neutrinos to be of the same form as the ones of the up-quarks in the five texture zero solutions for the quark matrices. This is the case for many unified and partially unified models. We find that it is possible to have solutions which account for the solar and at...
متن کاملAspects of Neutrino Mass Matrices
The minimal standard model involves three chiral neutrino states, but it does not admit renormalizable interactions that can generate neutrino masses. Nevertheless, experimental evidence show that both solar and atmospheric neutrinos display flavor oscillations, and hence that neutrinos do have mass. Among the many renormalizable and gauge-invariant extensions of the standard model that can pro...
متن کاملSmall entries of neutrino mass matrices
We consider phenomenologically allowed structures of the neutrino mass matrix in the case of three light neutrino species. Constraints from the solar, atmospheric and reactor neutrino experiments as well as those from the neutrinoless double beta decay are taken into account. Both hierarchical and quasi-degenerate neutrino mass cases are studied. Assuming maximal νμ − ντ mixing we derive simple...
متن کاملBimaximal Neutrino Mixings from Lopsided Mass Matrices
Current solar and atmospheric neutrino oscillation data seem to favor a bimaximal pattern for neutrino mixings where the matrix elements Ue2 and Uμ3 are of order one, while Ue3 is much smaller. We show that such a pattern can be obtained quite easily in theories with “lopsided” mass matrices for the charged leptons and the down type quarks. A relation connecting the solar and atmospheric neutri...
متن کاملFrom Fermion Mass Matrices to Neutrino Oscillations
We present an ansatz for the quark and lepton mass matrices, derivable from SO(10) type GUTs, which accommodates a heavy (> 92GeV ) top quark and permits large mixings in the νμ ↔ ντ sector (as suggested by the recent Kamiokande and IMB data on the atmospheric neutrinos). The well known asymptotic relations mb = mτ , ms = 1 3mμ and mdms = memμ all hold to a good approximation. Depending on νμ ↔...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2015
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-015-3569-4