Low scale Seesaw model and Lepton Flavor Violating Rare B Decays

Details Low scale Seesaw model and Lepton Flavor Violating Rare B Decays Low scale Seesaw model and Lepton Flavor Violating Rare B Decays

2005-12-02

arxiv.org/abs/hep-ph/0512010v2

Phys.Rev. D73 (2006) 074011

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 6 figures

Scientific paper

10.1103/PhysRevD.73.074011

We study lepton flavor number violating rare B decays, $b \to s l_h^{\pm} l_l^{\mp}$, in a seesaw model with low scale singlet Majorana neutrinos motivated by the resonant leptogenesis scenario. The branching ratios of inclusive decays $ b \to s l_h^{\pm} \bar{l_l}^{\mp} $ with two almost degenerate singlet neutrinos at TeV scale are investigated in detail. We find that there exists a class of seesaw model in which the branching fractions of $ b \to s \tau \mu $ and $\tau \to \mu \gamma$ can be as large as $10^{-10}$ and $10^{-9}$ within the reach of Super B factories, respectively, without being in conflict with neutrino mixings and mass squared difference of neutrinos from neutrino data, invisible decay width of $Z$ and the present limit of $Br(\mu \to e \gamma)$.

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