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Single Production of Fourth Family Sneutrino via RPV Couplings at Linear Colliders

The single production of fourth family sneutrino $\tildeν_{4}$ via R-parity violating interactions in electron-positron collisions has been investigated. We study the decays of $\tildeν_{4}$ into different flavor dilepton $e^{\pm}μ^{\mp}$ via R-parity violation. It is shown that R-parity violating couplings $(λ_{411},λ_{412})$ down to 0.001 will be reachable at future linear colliders which would provide better accuracy comparing to the indirect measurements as complementary to the LHC results.