Tri-bimaximal neutrino mixing from orbifolding
نویسندگان
چکیده
منابع مشابه
Tri-bimaximal Neutrino Mixing from Orbifolding
We show that the A4 discrete symmetry that naturally leads to tri-bimaximal neutrino mixing can be simply obtained as a result of an orbifolding starting from a model in 6 dimensions. This particular orbifolding has four fixed points where 4 dimensional branes are located and the tetrahedral symmetry of A4 connects these branes. In this approach A4 appears after the reduction from six to four d...
متن کاملTri-bimaximal and bimaximal neutrino mixing from discrete sym- metries
— The neutrino oscillation data are well explained by the tri-bimaximal pattern. Recently it has been shown that also the bimaximal pattern could be a very good starting point in order to describe the lepton mixing. In this paper I review both the flavour structures and then I present an explicit example. 1. – The lepton mixing matrix The solar and the atmospheric neutrino anomalies are well ex...
متن کاملModelling tri-bimaximal neutrino mixing
We model tri-bimaximal lepton mixing from first principles in a way that avoids the problem of the vacuum alignment characteristic of such models. This is achieved by using a softly broken A4 symmetry realized with an isotriplet fermion, also triplet under A4. No scalar A4-triplet is introduced. This represents one possible realization of general schemes characterized by the minimal set of eith...
متن کاملTri - bimaximal Neutrino Mixing and θ 13
We propose an extension of tri-bimaximal mixing to include a non-zero reactor angle θ13 while maintaining the tri-bimaximal predictions for the atmospheric angle θ23 = 45 o and solar angle θ12 = 35 . We show how such tri-bimaximalreactor mixing can arise at leading order from realistic GUT models with nonAbelian discrete family symmetry spontaneously broken by flavons with vacuum alignment, bas...
متن کاملTri-Bimaximal Neutrino Mixing from Discrete Symmetry in Extra Dimensions
We discuss a particularly symmetric model of neutrino mixings where, with good accuracy, the atmospheric mixing angle θ23 is maximal, θ13 = 0 and the solar angle satisfies sin θ12 = 1 3 (Harrison-Perkins-Scott (HRS) matrix). The discrete symmetry A4 is a suitable symmetry group for the realization of this type of model. We construct a model where the HRS matrix is exactly obtained in a first ap...
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: Nuclear Physics B
سال: 2007
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2007.03.042