Models of Neutrino Masses and Mixings: a Progress Report

نویسنده

  • GUIDO ALTARELLI
چکیده

We present some recent developments on model building for neutrino masses and mixings. In particular, we review tri-bimaximal neutrino mixing derived from discrete groups, notably A4. We discuss the problems encountered with extending the symmetry to the quark sector and with Grand Unification.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Progress on Models of Neutrino Masses and Mixings

We review some recent results obtained by our group on models of neutrino masses and mixings in the general context of SUSY GUT’s with an associated flavour symmetry Talk given at the Fujihara Seminar on Neutrino Mass and Seesaw Mechanism, KEK (Japan), 23–25 February 2004 CERN-PH-TH/2004-076 May 2004

متن کامل

Models of Neutrino Masses and Mixings

We briefly review models of neutrino masses and mixings. In view of the existing experimental ambiguities many possibilities are still open. After an overview of the main alternative options we focus on the most constrained class of models based on three widely split light neutrinos within SUSY Grand Unification. Talk given at the 9th International Workshop on Neutrino Telescopes, Venice, March...

متن کامل

Minimal So(10) Grand Unification: Predictions for Proton Decay and Neutrino Masses and Mixings

Prospects for SO(10) as a minimal grand unification group have recently been heightened by several considerations such as the MSW resolution of the solar neutrino puzzle, baryogenesis, possibility for understanding fermion masses etc. I review the present status of the minimal SO(10) models with special emphasis on the predictions for proton lifetime and predictions for neutrino masses for the ...

متن کامل

Recent Progress in Neutrino Astrophysics

Recent progress in neutrino physics has been rapid, to a large extent thanks to observations of neutrinos produced in astrophysical environments. Here, we review the current standing on such questions as neutrino masses and mixings, focusing mainly on the interplay between neutrino physics, astrophysics and cosmology.

متن کامل

Neutrino Masses and Mixings from String Theory Instantons

We study possible patterns of neutrino masses and mixings in string models in which Majorana neutrino masses are generated by a certain class of string theory instantons recently considered in the literature. These instantons may generate either directly the dim=5 Weinberg operator or right-handed neutrino Majorana masses, both with a certain flavour-factorised form. A hierarchy of neutrino mas...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007