Abstract
Abstract
We investigate the new contributions to the parameters gL and gR of the $$ Zb\overline{b} $$
Zb
b
¯
vertex in a multi-Higgs-doublet model (MHDM). We emphasize that those contributions generally worsen the fit of those parameters to the experimental data. We propose a solution to this problem, wherein gR has the opposite sign from the one predicted by the Standard Model; this solution, though, necessitates light scalars and large Yukawa couplings in the MHDM.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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