Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-05-10
JHEP0507:048,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
27 pages, 3 figures; references added, discussion of the E6 model modified
Scientific paper
10.1088/1126-6708/2005/07/048
We consider the mechanism of screening of the Dirac flavor structure in the context of the double seesaw mechanism. As a consequence of screening, the structure of the light neutrino mass matrix, m_\nu, is determined essentially by the structure of the (Majorana) mass matrix, M_S, of new super-heavy (Planck scale) neutral fermions S. We calculate effects of the renormalization group running in order to investigate the stability of the screening mechanism with respect to radiative corrections. We find that screening is stable in the supersymmetric case, whereas in the standard model it is unstable for certain structures of M_S. The screening mechanism allows us to reconcile the (approximate) quark-lepton symmetry and the strong difference of the mixing patterns in the quark and lepton sectors. It opens new possibilities to explain a quasi-degenerate neutrino mass spectrum, special ``neutrino'' symmetries and quark-lepton complementarity. Screening can emerge from certain flavor symmetries or Grand Unification.
Lindner Manfred
Schmidt Michael A.
Smirnov Alexei Yu.
No associations
LandOfFree
Screening of Dirac flavor structure in the seesaw and neutrino mixing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Screening of Dirac flavor structure in the seesaw and neutrino mixing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening of Dirac flavor structure in the seesaw and neutrino mixing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-312646