Searching for Additional Higgs Bosons via Higgs Cascades

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 $\tan \beta >5$ that is currently unconstrained experimentally. We show that the process $gg\to H\to AZ\to ZZh$ 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 $ZZh$ state, and we find that the most sensitive final states are $\ell \ell \ell \ell bb$, $\ell \ell jjbb$, $\ell \ell \nu \nu \gamma \gamma$ and $\ell \ell \ell \ell +$missing energy.

24 pages, 12 figures

References in corpus (10)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
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• Fiducial and differential cross sections of Higgs boson production measured in the four-lepton decay channel in $pp$ collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
• Search for new light gauge bosons in Higgs boson decays to four-lepton final states in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector at the LHC
• Phenomenology of Induced Electroweak Symmetry Breaking

Cited by in corpus (4)

• The forgotten channels: charged Higgs boson decays to a $W^{\pm }$ and a non-SM-like Higgs boson
• Relaxed constraints on the heavy scalar masses in 2HDM
• Seeking Heavy Higgs Bosons through Cascade Decays
• Mass reconstruction of MSSM Higgs boson