Constraints on the charged Higgs boson of the two Higgs doublet model type III

TL;DR

This paper analyzes experimental constraints on the charged Higgs boson within the two Higgs doublet model type III, using D0 data to compare theoretical predictions with observed cross section limits for various mass ranges.

Contribution

It provides new constraints on the charged Higgs boson mass in the type III model by comparing theoretical predictions with experimental data from the D0 collaboration.

Findings

Constraints on charged Higgs mass for M_{H^+} > top quark mass

Limits derived from cross section measurements in different decay channels

Comparison of two scenarios within the type III model

Abstract

The D0 experiment has reported a direct search for a charged Higgs boson produced by $q \bar q$ annihilation and decaying to $t \bar b$ final state, in the $180 \leq M_{H^+} \leq 300$ GeV mass range. The analysis has lead to upper limits on the production cross section in the framework of the two Higgs doublet model types I, II and III. We compare the predictions of two different scenarios in the framework of the two Higgs doublet type III to the cross section limits reported by D0 collaboration, and we obtain constraints on the charged Higgs mass, for the case when the charged Higgs mass is bigger than the top quark mass. Also, searches for the charged Higgs boson with a mass smaller than top quark mass are considered, we discuss the possible limits on the charged Higgs boson mass obtained from measurements of the ratio $R_\sigma=\sigma_{t \bar t}^{l+jets}/\sigma_{t \bar t}^{dileptons}$ within the two Higgs doublet model type III.