Searching for Additional Higgs Bosons via Higgs Cascades
Christina Gao, Markus A. Luty, Michael Mulhearn, Nicol\'as A. Neill,, Zhangqier Wang

TL;DR
This paper proposes a new search strategy for additional Higgs bosons in a type I two Higgs doublet model at the LHC, focusing on a specific decay chain that can probe currently unconstrained parameter space.
Contribution
It introduces the process $gg o H o A Z o ZZh$ as a discovery mode for extended Higgs sectors and analyzes promising decay channels for detection.
Findings
The process can effectively probe the unconstrained parameter space at $ aneta > 5$.
Several decay modes, including $ ext{4 leptons + 2 b jets}$ and $ ext{2 leptons + jets + 2 b jets}$, are identified as most sensitive.
The study highlights potential discovery channels for extended Higgs sectors at the LHC.
Abstract
The discovery of a 125 GeV Higgs boson at the Large Hadron Collider strongly motivates direct searches for additional Higgs bosons. In a type I two Higgs doublet model there is a large region of parameter space at that is currently unconstrained experimentally. We show that the process can probe this region, and can be the discovery mode for an extended Higgs sector at the LHC. We analyze 9 promising decay modes for the state, and we find that the most sensitive final states are , , and missing energy.
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