Resonant sneutrino production at Tevatron Run II

Abstract

We consider the single chargino production at Tevatron $p\bar{p}\to {\tilde{\nu }}_i\to {\tilde{\chi }}_1^{\pm }{l}_i^{\mp }$ as induced by the resonant sneutrino production via a dominant \RPV coupling of type ${ł}_{ijk}^{\prime }{L}_i{Q}_j{D}_k^c$. Within a supergravity model, we study the three leptons final state. The comparison with the expected background demonstrate that this signature allows to extend the sensitivity on the \susyq mass spectrum beyond the present LEP limits and to probe the relevant \RPV coupling down to values one order of magnitude smaller than the most stringent low energy indirect bounds. The trilepton signal offers also the opportunity to reconstruct the neutralino mass in a model independent way with good accuracy.

4 pages

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