PHENOMENOLOGY OF "BIMAXIMAL + DEMOCRATIC" TYPE NEUTRINO MASS MATRIX
نویسندگان
چکیده
منابع مشابه
Bimaximal Neutrino Mixing and Neutrino Mass Matrix
We show that the bimaximal neutrino mixing pattern suggested by the solar and atmospheric neutrino data can be derived from the maximal, symmetric , four neutrino mixing in the limit that one of the neutrinos is made heavy. Imposing the constraints of no neutrinoless double beta decay and a 20% hot dark matter component of the universe leads to a three neutrino mass matrix recently suggested by...
متن کاملPhenomenology of Neutrino Mass Matrix A
The search for possible mixing patterns of charged leptons and neutrinos is important to get clues of the origin of nearly maximal mixings, since there are some preferred bases of the lepton mass matrices given by underlying theories. We systematically examine the mixing patterns which could lead to large lepton mixing angles. We find out 37 mixing patterns are consistent with experimental data...
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 کاملNeutrino Mixing in a Democratic-Seesaw-Mass-Matrix Model
On the basis of a seesaw-type mass matrix model for quarks and leptons, Mf ≃ mLM F mR, wheremL ∝ mR are universal for f = u, d, ν and e (up-quark-, down-quark-, neutrinoand charged lepton-sectors), and MF has a form [(unit matrix)+(democratic-type matrix)], neutrino masses and mixings are investigated. It is tried to understand a large νμ-ντ mixing, i.e., sin 2 2θ23 ∼ 1, with mν1 ≪ mν2 ∼ mν3, w...
متن کاملInverted Mass Hierarchy from Scaling in the Neutrino Mass Matrix: Low and High Energy Phenomenology
Best-fit values of recent global analyzes of neutrino data imply large solar neutrino mixing, vanishing Ue3 and a non-maximal atmospheric neutrino mixing angle θ23. We show that these values emerge naturally by the hypothesis of “scaling” in the Majorana neutrino mass matrix, which states that the ratios of its elements are equal. It also predicts an inverted hierarchy for the neutrino masses. ...
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: Modern Physics Letters A
سال: 2006
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s021773230601944x