Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-31
Phys.Rev.D82:113003,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
v1: 25 pages, 8 figures; v2: proofread version for PRD. Included muon-electron conversion in nuclei at the referee's suggestio
Scientific paper
10.1103/PhysRevD.82.113003
A mechanism has been suggested recently to generate the neutrino mass out of a dimension-seven operator. This is expected to relieve the tension between the occurrence of a tiny neutrino mass and the observability of other physics effects beyond it. Such a mechanism would inevitably entail lepton flavor violating effects. We study in this work the radiative and purely leptonic transitions of the light charged leptons. In so doing we make a systematic analysis of the flavor structure by providing a convenient parametrization of the mass matrices in terms of independent physical parameters and diagonalizing them explicitly. We illustrate our numerical results by sampling over two CP phases and one Yukawa coupling which are the essential parameters in addition to the heavy lepton mass. We find that with the stringent constraints coming from the muon decays and the muon-electron conversion in nuclei taken into account the decays of the tau lepton are severely suppressed in the majority of parameter space. There exist, however, small regions in which some tau decays can reach a level that is about 2 orders of magnitude below their current bounds.
Liao Yanbiao
Ning Guo-Zhu
Ren Lu
No associations
LandOfFree
Flavor Violating Transitions of Charged Leptons from a Seesaw Mechanism of Dimension Seven 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 Flavor Violating Transitions of Charged Leptons from a Seesaw Mechanism of Dimension Seven, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flavor Violating Transitions of Charged Leptons from a Seesaw Mechanism of Dimension Seven will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-8908