Decays of the Lightest Top Squark
arXiv:hep-ph/9907428 · doi:10.1103/PhysRevD.61.095006
Abstract
We analyze higher order decay modes of the lightest top squark in the Minimal Supersymmetric extension of the Standard Model (MSSM), where the lightest SUSY particle (LSP) is assumed to be the neutralino . For small 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.
21 pages with 4 figures, Latex. Typo corrected and references updated. To appear in Phys. Rev. D
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