English

Probing lepton flavor violation with nonzero $U_{e3}$ and leptogenesis through $A_4$ symmetry breaking

High Energy Physics - Phenomenology 2010-06-16 v1

Abstract

We study how lepton flavor violation (LFV) is related to the reactor angle θ13\theta_{13}, LHC/dark matter (DM) signal with a successful leptogenesis in a radiative seesaw model through A4A_4 flavor symmetry breaking, in the light of the deviation of tri-bimaximal mixing (TBM) angles and the recent precision oscillation data. To do this, we consider the normal mass spectrum of light neutrino giving a successful leptogenesis at electroweak (EW) scale or more with a relatively large sinθ13O(0.1)\sin\theta_{13}\simeq{\cal O}(0.1), where a successful leptogenesis requires LHC/DM signal mm_{-}\lesssim a few keV in our scenario, and we show that the measurement of τμγ\tau\rightarrow\mu\gamma is strongly dependent on mm_{-} and the leptogenesis scale. Especially, we show that μeγ\mu\rightarrow e\gamma and μe\mu-e conversion are proportional to the value of θ13\theta_{13}, and the measurements of both μeγ\mu\rightarrow e\gamma (and/or μe\mu-e conversion) and θ13\theta_{13} can give a prediction of τμγ\tau\rightarrow\mu\gamma with a successful leptogenesis.

Keywords

Cite

@article{arxiv.1006.2953,
  title  = {Probing lepton flavor violation with nonzero $U_{e3}$ and leptogenesis through $A_4$ symmetry breaking},
  author = {Y. H. Ahn},
  journal= {arXiv preprint arXiv:1006.2953},
  year   = {2010}
}

Comments

12 pages, 9 figures