On the heavy Majorana neutrino and light sneutrino contribution to \bm{$e^{-}{e}^{-}\to {\ell }^{-}{\ell }^{-}$}, (\bm{$\ell =\mu ,\tau )$}

M. Cannoni, St. Kolb, O. Panella

The cross section for the reaction $e^{-}{e}^{-}\to {\ell }^{-}{\ell }^{-}$ ($\ell =\mu ,\tau$) is calculated in models with heavy Majorana neutrinos mediating lepton number violating amplitudes at…