Role of Majorana CP phases in the bimaximal mixing scheme: Hierarchical Dirac mass case
Abstract
We discuss the energy scale profile of the bimaximal mixing which is given at the grand unified theory (GUT) energy scale in the minimal supersymmetry model, associated with an assumption that Y^{†}_{ν}Y_{ν} is diagonal, where Y_{ν} is the neutrinoYukawa coupling matrix. In this model, the Dirac mass matrix which appears in the seesaw neutrino mass matrix is determined by three neutrino masses, two relative Majorana phases and three heavy Majorana masses. All CP phases are related by two Majorana phases. We show that the requirement that the solar mixing angle moves from the maximal mixing at GUT to the observed one as the energy scale decreases by the renormalization effect. We discuss the leptogenesis and the lepton flavor violation process by assuming the universal soft breaking terms.
 Publication:

Physical Review D
 Pub Date:
 July 2004
 DOI:
 10.1103/PhysRevD.70.013005
 arXiv:
 arXiv:hepph/0402106
 Bibcode:
 2004PhRvD..70a3005S
 Keywords:

 14.60.Pq;
 13.35.r;
 Neutrino mass and mixing;
 Decays of leptons;
 High Energy Physics  Phenomenology
 EPrint:
 19 pages, 2 figures