Higgs decay mediated by top-quark with flavor-changing neutral scalar interactions

TL;DR

This paper investigates flavor-changing neutral Higgs interactions involving top quarks within the Two-Higgs-Doublet Model Type III, analyzing decay processes, parameter space constraints, and potential experimental implications.

Contribution

It provides a detailed analysis of flavor-changing Higgs interactions in THDM-III, including decay modes and parameter constraints, highlighting regions compatible with current experimental data.

Findings

Suppressed flavor-changing processes at low t_beta values.

Allowed parameter regions identified for different t_beta scenarios.

Predictions for future experimental detection of FC interactions.

Abstract

We explore the flavor-changing parameters mediated by a Higgs boson within the THDM-III context. In particular, the $h\to t^* c$ processes, and check the high suppression for the FC in the THDM-III context for the low $t_\beta$ parameters. Our exploration in the $\chi_{ij}^{u}-\chi_{ij}^{d}-$parameter space shows the allowed regions for different $t_\beta^{}$ values. We explored different modes for Higgs decays, considered the experimental constraints to get scattering plots for the FC parameters and some relevant decay modes. We expect future results to figure out the FC and its implications in the scalar sector.