Searching For Resonances inside Top-like Events

TL;DR

This paper investigates how to detect heavy Higgs boson resonances in extended Higgs sectors at the Tevatron and LHC by analyzing final states similar to top quark pair production, focusing on resonance structures to distinguish signals.

Contribution

It introduces analysis techniques for identifying heavy Higgs resonances in top-like events and estimates the experimental sensitivity at Tevatron and LHC.

Findings

Resonant production of heavy Higgs bosons can produce distinguishable signals.

Proposed methods improve the separation of signal from background.

Estimated sensitivities suggest potential for discovery at current colliders.

Abstract

In extended Higgs sectors, heavy Higgs bosons can decay via cascades to a light Higgs boson plus $W$ and $Z$ bosons. We study signals of such sectors at the Tevatron and LHC that result from resonant production of a heavy $H^0$ followed by the decay $H^0 \to H^\pm W^\mp$ with $H^+ \to W^+ h^0 \to W^+ b\bar{b}$ or $H^+ \to t\bar{b} \to W^+ b\bar{b}$. The final states have the same particle content as that of $t\bar{t}$ production, but with a resonant structure that can be used to distinguish signal events from background events. We propose analysis techniques and estimate the experimental sensitivity of the Tevatron and LHC experiments to these signals.