The lepton flavor violating decays $Z\to l_i l_j$ in the simplest little Higgs model

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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12 pages, 9 figures

Scientific paper

In the simplest little Higgs model the new flavor-changing interactions between heavy neutrinos and the Standard Model leptons can generate contributions to some lepton flavor violating decays of $Z$-boson at one-loop level, such as $Z \to \tau^{\pm}\mu^{\mp}$, $Z\to \tau^{\pm}e^{\mp}$, and $Z \to \mu^{\pm}e^{\mp}$. We examine the decay modes, and find that the branching ratios can reach $10^{-7}$ for the three decays, which should be accessible at the Giga$Z$ option of the ILC.

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