A Study of Heavy Higgs Properties at a Multi-TeV e+e- Collider

TL;DR

This study evaluates the potential of a 3 TeV electron-positron collider to precisely measure the masses and widths of heavy Higgs bosons, which are vital for understanding Supersymmetry and dark matter.

Contribution

It provides a detailed simulation-based analysis of heavy Higgs boson production and measurement at a future high-energy collider, including realistic beam and background effects.

Findings

Achieves precise mass and width measurements of heavy Higgs bosons.

Demonstrates the collider's capability to distinguish different Higgs scenarios.

Quantifies measurement uncertainties for benchmark models.

Abstract

The precise determination of the masses of the neutral and charged heavy Higgs bosons is a crucial input for the study of Supersymmetry and its relation with cosmology through dark matter. This paper presents a study of e+e- -> HA and H+H- production at sqrts=3 TeV. The analysis is performed with full simulation and reconstruction accounting for beamstrahlung effects and the overlay of gamma gamma -> hadrons events. Results are presented in terms of the accuracy on the determination of the masses and widths of the heavy Higgs bosons in two benchmark scenarios.