Speaker
Prof.
Yaquan Fang
(Institute of High Energy Physics)
Description
The discovery of a light Higgs particle h0 (125 GeV) opens up new prospect for searching heavier Higgs boson(s) at the LHC Run-2, which will unambiguously point to new physics beyond the standard model (SM). We study the detection of a heavier neutral Higgs boson H0 via di-Higgs production channel at the LHC (14 TeV) with H0 → h0h0 →bbγ γ ,W W*γ γ , WW*WW*. This directly probes the Hhh cubic Higgs interaction, which exists in most extensions of the SM Higgs sector. For the decay products of final states WW* γ γ, both pure leptonic mode WW*→lνlν and semi-leptonic mode WW*→qqlν are included. For WW*WW* analysis, only same signed di-lepton final state is considered. We analyze signals and backgrounds by performing fast detector simulation for the full process pp → H → hh over the mass range of MH from 250 to 600 GeV. For generic two-Higgs-doublet models (2HDM), we present the discovery reach of the heavier Higgs boson at the LHC Run-2, and compare it with the current Higgs global fit of the 2HDM parameter space. In addition, the impact of the h0 replaced by a scalar particle instead of 125 GeV will be briefly discussed.
| I intend to submit my contribution for the proceedings | Yes |
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Primary author
Prof.
Yaquan Fang
(Institute of High Energy Physics)
