Search for lepton flavor violation at future lepton colliders

Abstract

Lepton flavor violating (LFV) processes via four-Fermi contact interactions at future International Linear Collider (ILC) are studied. The effective Lagrangian is composed of six-operators, and the LFV effects on both $e^{+}{e}^{-}\to e^{+}{\ell }^{-}$ and $e^{-}{e}^{-}\to e^{-}{\ell }^{-}$ ($\ell =\mu$ or $\tau$) processes can be parametrized by three parameters. Taking account of previous experimental results of LFV processes $\mu \to 3e$ and $\tau \to 3e$, we find that the upper limits on the LFV parameters for $\ell =\tau$ could be improved at the ILC experiment using the polarized electron beam. The improvement of the upper limits is more than an order of magnitude smaller than previous ones.

11 pages, 3 figures

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Cited by in corpus (3)

• Lepton Flavor Violation Induced by a Neutral Scalar at Future Lepton Colliders
• Probing TeV scale origin of neutrino mass at future lepton colliders via neutral and doubly-charged scalars
• Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino Mass Relevant Particles