Flavour-changing top decays in the aligned two-Higgs-doublet model
by
Gauhar Abbas
→
Europe/Rome
Description
We compute flavour-changing top decays $t \rightarrow c h$ and $t \rightarrow c V$ ($V= \gamma, Z$)
within the generic framework of aligned two-Higgs-doublet model. By exploiting constrains from flavour physics
and that of measurements of the Higgs properties, we investigate the parameter space of the model and its
impact on the associated branching ratios. It is observed that the Higgs signal strength in the di-photon
channel imposes important restrictions on the $t \rightarrow c h$ decay rate provided the charged scalar of the
model is light. We conclude that rates of these flavour-changing top decays are beyond the expected sensitivity
of the future high-luminosity phase of the LHC.