Heavy Higgs bosons and the 2 TeV $W'$ boson

TL;DR

This paper explores a gauge theory extension explaining a 1.9 TeV $W'$ boson signal at the LHC, highlighting significant heavy Higgs boson decays and estimating their masses based on observed excess events.

Contribution

It demonstrates that heavy Higgs bosons can have sizable decay rates from a $W'$ boson and estimates their masses using LHC excess data.

Findings

Heavy Higgs bosons have sizable branching fractions from $W'$ decays.

Estimated heavy Higgs masses are in the 400--700 GeV range.

Supports a specific gauge theory extension for LHC anomalies.

Abstract

The hints from the LHC for the existence of a $W'$ boson of mass around 1.9 TeV point towards a certain $SU(2)_L\times SU(2)_R\times U(1)_{B-L}$ gauge theory with an extended Higgs sector. We show that the decays of the $W'$ boson into heavy Higgs bosons have sizable branching fractions. Interpreting the ATLAS excess events in the search for same-sign lepton pairs plus $b$ jets as arising from $W'$ cascade decays, we estimate that the masses of the heavy Higgs bosons are in the 400--700 GeV range.