LHC search for di-Higgs decays of stoponium and other scalars in events with two photons and two bottom jets

Abstract

We study the prospects for LHC discovery of a narrow resonance that decays to two Higgs bosons, using the final state of two photons and two bottom jets. Our work is motivated in part by a scenario in which two-body flavor-preserving decays of the top squark are kinematically forbidden. Stoponium, a hadronic bound state of the top squark and its anti-particle, will then form, and may have a large branching fraction into the two Higgs boson final state. We estimate the cross-section needed for a 5-sigma discovery at the 14 TeV LHC for such a narrow di-Higgs resonance, using the invariant mass distributions of the final state bottom jets and photons, as a function of the integrated luminosity. The results are also applicable to any other di-Higgs resonance produced by gluon fusion.

15 pages v3:Modified cuts on photon pT's and fake photon backgrounds added

References in corpus (9)

• 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
• PYTHIA 6.4 Physics and Manual
• New Physics in LHC Higgs boson pair production
• Search for direct top-squark pair production in final states with two leptons in pp collisions at sqrt(s)=8TeV with the ATLAS detector
• Compressed supersymmetry and natural neutralino dark matter from top squark-mediated annihilation to top quarks
• Diphoton decays of stoponium at the Large Hadron Collider
• The top squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry
• Radiative corrections to stoponium annihilation decays

Cited by in corpus (6)

• What's in the Loop? The Anatomy of Double Higgs Production
• Search for nonresonant Higgs boson pair production in final states with two bottom quarks and two photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• New physics in resonant production of Higgs boson pairs
• Invisible Decays in Higgs Pair Production
• Search for resonant pair production of Higgs bosons in the bbZZ channel in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Resonant Higgs pair production as a probe of stop at the LHC