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

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

1999-09-09

arxiv.org/abs/hep-ph/9909299v4

Phys.Rev. D63 (2001) 017301

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, LateX,1 figure: eps format, 3 tables. Final version, to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.63.017301

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 $\Gamma_{Z}$. We obtain bounds for the mixing angles through the experimentally allowed contour regions of the parameters $\Lambda_{L,R}$ introduced here. In order to get a more restrictive region, we also consider the experimental results for $B\to \nu \nu X$ as well.

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