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Fitting the Zbb¯ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
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Journal Article
Fitting the Zbb¯ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
2021
Overview
A
bstract
We investigate the new contributions to the parameters
g
L
and
g
R
of the
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
g
R
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 Berlin Heidelberg,Springer Nature B.V
