Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-11-16
New J.Phys. 7 (2005) 65
Physics
High Energy Physics
High Energy Physics - Phenomenology
references added, typos corrected
Scientific paper
10.1088/1367-2630/7/1/065
We study the connection between charged lepton electric dipole moments, $d_l$ $(l=e,\mu,\tau)$, and seesaw neutrino mass generation in a simple two Higgs doublet extension of the Standard Model plus three right-handed neutrinos (RHN) $N_a$, $a=1,2,3$. For RHN with hierarchical masses and at least one with mass in the 10 TeV range we obtain the upper bounds of $|d_e|< 9\times 10^{-30}$ e-cm and $|d_{\mu}|<2 \times 10^{-26}$ e-cm. Our scenario favors the normal mass hierarchy for the light neutrinos. We also calculated the cross section for $e^-e^- \ra W^- W^-$ in a high luminosity collider with constraints from neutrinoless double beta decay of nuclei included. Among the rare muon decay experiments we find that $\mu\ra e\gamma$ is most sensitive and the upper limit is $<8\times 10^{-13}$.
Chang We-Fu
Ng John N.
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