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arXiv · hep-ph/9907428

Decays of the Lightest Top Squark

C. Boehm·A. Djouadi·Y. Mambrini
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Abstract

We analyze higher order decay modes of the lightest top squark $\tilde{t}_1$ in the Minimal Supersymmetric extension of the Standard Model (MSSM), where the lightest SUSY particle (LSP) is assumed to be the neutralino $χ_1^0$. For small $\tilde{t}_1$ masses accessible at LEP2 and the Tevatron, we show that the four-body decay mode into the LSP, a bottom quark and two massless fermions, $\tilde{t}_1 \ra b χ_1^0 f\bar{f}'$, can dominate in a wide range of the MSSM parameter space over the loop-induced decay into a charm quark and the LSP, $\tilde{t}_1 \ra c χ_1^0$. This result might affect the experimental searches on this particle, since only the later signal has been considered so far.

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C. Boehm, A. Djouadi, Y. Mambrini. 1999-10-04. Decays of the Lightest Top Squark. https://doi.org/10.1103/physrevd.61.095006

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