The LHC searches for heavy neutral Higgs bosons by jet substructure analysis

TL;DR

This paper explores novel search strategies for heavy neutral Higgs bosons at the high-luminosity LHC, utilizing jet substructure techniques to improve detection of decay modes like A→hZ and A/H→t t̄, extending mass reach up to 1 TeV.

Contribution

It introduces new search modes for heavy neutral Higgs bosons using boosted object tagging, complementing existing MSSM-inspired methods at the LHC.

Findings

Enhanced mass reach for heavy Higgs bosons up to ~1 TeV.

Demonstrated effectiveness of jet substructure techniques in Higgs searches.

Proposed decay channels provide complementary search avenues.

Abstract

The two-Higgs-doublet model contains extra Higgs bosons, with mass ranges spanning from several hundred GeV to about 1 TeV. We study the possible experimental searches for the neutral Higgs bosons of $A$ and $H$ at the future high-luminosity LHC runs. Besides of the conventional search modes that are inspired by the supersymmetric models, we discuss two search modes which were not quite addressed previously. They are the decay modes of $A\to hZ$ and $A/H \to t \bar t$. Thanks to the technique of tagging boosted objects of SM-like Higgs bosons and top quarks, we show the improved mass reaches for heavy neutral Higgs bosons with masses up to $\sim{\cal O}(1)\,\TeV$. The modes proposed here are complementary to the conventional experimental searches motivated by the MSSM.