PT Journal
AU Han, XF
   Wang, L
   Wu, L
   Yang, JM
   Zhang, MC
TI Explaining 750 GeV diphoton excess from top/bottom partner cascade decay in two-Higgs-doublet model extension
SO Physics Letters B
JI Phys. Lett. B
PY 2016
BP 309
EP 316
VL 756
DI 10.1016/j.physletb.2016.03.035
LA English
AB 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 -> T (T) over bar or pp -> B (B) over bar followed by the decay T -> Ht or B -> Hb. The diphoton decay rate of His 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.
ER