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

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 ${\Gamma }_Z$. 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.

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

References in corpus (1)

• The Full Range of Predictions for B Physics From Iso-singlet Down Quark Mixing