Flavour-changing top decays in the aligned two-Higgs-doublet model.

Venerdi 20 novembre 2015, alle 16, in saletta riunioni, il dr. Gauhar Abbas, dell' Instituto de Física Corpuscular (IFIC), Valencia, Spain, terra' un seminario:
Title: Flavour-changing top decays in the aligned two-Higgs-doublet model

Abstract: 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.

Persona di contatto:P. Colangelo

Relatore:Dr. Gauhar Abbas (IFIC Valencia)