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Getting bounds on the mixing angles for a non-sequential bottom quark

R. Martinez·J-Alexis Rodriguez·M. Vargas
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Abstract

We analyze the vertex Zff in the framework of models that add a new bottom quark in a nonsequential way and we evaluate the tree level contribution to LEP/SLC data $R_{b}$, $R_{l}$ and the total Z width $Γ_{Z}$. We obtain bounds for the mixing angles through the experimentally allowed contour regions of the parameters $Λ_{L,R}$ introduced here. In order to get a more restrictive region, we also consider the experimental results for $B\to ννX$ as well.

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R. Martinez, J-Alexis Rodriguez, M. Vargas. 2000-07-18. Getting bounds on the mixing angles for a non-sequential bottom quark. https://doi.org/10.1103/physrevd.63.017301

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