Limits on the charged Higgs parameters in the two Higgs doublet model using CMS sqrt{s}=13 TeV results

Prasenjit Sanyal

doi:10.1140/epjc/s10052-019-7431-y

Abstract

The latest CMS results on the upper limits on sigma _{H^pm }BR(H^pm rightarrow tau ^pm nu ) and sigma _{H^pm }BR(H^+ rightarrow t{bar{b}}) for sqrt{s}=13 TeV at an integrated luminosity of 35.9 hbox {fb}^{-1} are used to impose constraints on the charged Higgs H^pm parameters within the Two Higgs Doublet Model (2HDM). The 2HDM is the simplest extension of the Standard Model (SM) under the same gauge symmetry to contain charged Higgs and is relatively little constrained compared to the Minimal Supersymmetric Standard Model (MSSM). The latest results lead to much more stringent constraints on the charged Higgs parameter space than for the earlier 8 TeV results. The CMS collaboration also studied the exotic bosonic decays H^pm rightarrow W^pm A and A rightarrow mu ^+ mu ^- for the first time and put upper limits on the BR(trightarrow H^+ b) for the light charged Higgs boson. These constraints lead to the exclusion of parameter space which is not excluded by the tau nu channel. For comparison the exclusion regions from flavor physics constraints are also discussed.

Highlights

The production of a charged Higgs particle, depending on its mass with respect to the top quark, can be divided into light (MH± Mt ), intermediate (MH± ∼ Mt ) and heavy (MH± Mt ) scenarios [31,32,33,34]
A comparison of exclusion limits on charged Higgs parameter space from 13 TeV and 8 TeV CMS results is presented in Sect. 4 along with the indirect flavor physics constraint coming from B → Xsγ
The 2 Two Higgs doublet model (2HDM) is the simplest extension of Standard Model (SM) containing charged Higgs

Summary

Introduction

The production of a charged Higgs particle, depending on its mass with respect to the top quark, can be divided into light (MH± Mt ), intermediate (MH± ∼ Mt ) and heavy (MH± Mt ) scenarios [31,32,33,34]. In Type I 2HDM, the second Higgs doublet 2 couples to the fermions, so all the quarks and charged leptons get their masses from the VEV of 2 The production cross section of the charged Higgs particle depends on its mass with respect to top quark and can be classified into three categories. In Type Y, because of the cot β dependence in the lepton sector the τ ν channel gets suppressed compared to the hadronic decay modes (dominantly into tbfor heavy H ±). MSSM and for some parameter choice, the bosonic decays can be more dominant over the fermionic decays once the channels are open

Experimental constraints

Summary and conclusions