A supersymmetric solution to the KARMEN time anomaly

Debajyoti Choudhury (Mehta Research Inst.); Herbi Dreiner (RAL); Peter Richardson (Oxford); Subir Sarkar (Oxford)

arxiv: hep-ph/9911365 · v2 · pith:7DNSFXF2new · submitted 1999-11-15 · ✦ hep-ph

A supersymmetric solution to the KARMEN time anomaly

Debajyoti Choudhury (Mehta Research Inst.) , Herbi Dreiner (RAL) , Peter Richardson (Oxford) , Subir Sarkar (Oxford) This is my paper

classification ✦ hep-ph

keywords anomalykarmenneutralinosupersymmetrictimebetabinoconsistent

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We interpret the KARMEN time anomaly as being due to the production of a (dominantly bino) neutralino with mass 33.9 MeV, which is the lightest supersymmetric particle but decays into 3 leptons through the violation of R-parity. For independent gaugino masses M_1 and M_2 we find regions in the (M_1, M_2, mu, tan beta) parameter space where such a light neutralino is consistent with all experiments. Future tests of this hypothesis are outlined.

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