Analysis of b quark pair production signal from neutral 2HDM Higgs bosons at future Linear Colliders

TL;DR

This study investigates the potential to detect neutral Higgs bosons from the two Higgs doublet model type I via b quark pair production at future linear colliders operating at 1 TeV, demonstrating observable signal peaks at high luminosity.

Contribution

It provides a detailed analysis of neutral Higgs boson signals in the 2HDM type I at linear colliders, focusing on specific benchmark points and the fully hadronic final state.

Findings

Signal peaks are observable in b-jet pair invariant mass distributions.

Analysis is most effective at sqrt(s)=1 TeV with 500 fb-1 luminosity.

The study identifies potential detection channels for scalar and pseudo-scalar Higgs bosons.

Abstract

In this paper, the b quark pair production events are analyzed as a source of neutral Higgs bosons of the two Higgs doublet model type I at linear colliders. The production mechanism is e+e- -> Z/gamma -> HA -> bbbb assuming a fully hadronic final state. The analysis aim is to identify both scalar and pseudo-scalar Higgs bosons in different benchmark points accommodating moderate boson masses. Due to pair production of Higgs bosons, the analysis is most suitable for a linear collider operating at sqrt(s) = 1 TeV. Results show that in selected benchmark points, signal peaks are observable in the b-jet pair invariant mass distributions at integrated luminosity of 500 fb-1.