Abstract
The possible detection of the supersymmetric partner of the top quark (stop) at the ep collider HERA is investigated in the framework of R-parity breaking models. Since there exist the R-parity breaking coupling t̃ed, the s-channel process e − p → t ̃ → e − d ̄ X would occur and therefore a sharp peak could be expected in the Bjorken parameter x distribution as a clear signal for this process.
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