We report the first search for supersymmetric particles via s-channel production and decay of smuons or muon sneutrinos at hadronic colliders. The data for the two-muon and two-jets final states were collected by the DO experiment, and correspond to an integrated luminosity of 94 +/- 5 pb^{ -1}. Assuming that R-parity is violated via the single coupling lambda^{ prime}_{ 211}, the number of candidate events is in agreement with expectation from the standard model. Exclusion contours are given in the (m_0,m_{ 1/2}) and (m_{ tilde{ chi}},m_{ tilde{ nu}}) planes for lambda^{ prime}_{ 211}=0.09, 0.08 and 0.07.
Categories: hep-ex