2016/01/31 by Xiao-Fang Han, Lei Wang, Lei Wu +2 · 1 citation
Physics and Astronomy · #Cascade #Extension (predicate logic) #Higgs boson #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/j.physletb.2016.03.035
published as Phys. Lett. B 756 (2016) 309-316 · 19 pages, 4 figures; some discussions and references added
openalex publication_date 2016/03/17 · arxiv created 2016/03/24 · arxiv updated 2016/03/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this paper, we interpret the 750 GeV diphoton excess in the Zee–Babu extension of the two-Higgs-doublet model by introducing a top partner (T)/bottom partner (B). In the alignment limit, the 750 GeV resonance is identified as the heavy CP-even Higgs boson (H), which can be sizably produced via the QCD process pp→TT¯ or pp→BB¯ followed by the decay T→Ht or B→Hb. The diphoton decay rate of H is greatly enhanced by the charged singlet scalars predicted in the Zee–Babu extension and the total width of H can be as large as 7 GeV. Under the current LHC constraints, we scan the parameter space and find that such an extension can account for the observed diphoton excess.