Type-II seesaw scalar triplet model at a 100 TeV pp collider: discovery and higgs portal coupling determination
Abstract
We investigate the collider phenomenology of the scalar triplet particles in the Type-II seesaw model at a 100 TeV pp collider. Depending on triplet vacuum expectation value v Δ, the dominant discovery channels could be H ++ H - and H ±± H ∓. We find the H ±± H ∓ → W ± W ± hW ∓ /ℓ ± ℓ ± hW ∓ channels are promising for both model discovery at relatively large v Δ and determination of the Higgs portal couplings λ 4 and λ 5. We also find that these two channels are complementary to indirect determination of λ 4 from future precise measurements on h → γγ decay rate. Together with pair production of the doubly-charged Higgs subsequently decaying into same-sign di-leptons, the H ±± H ∓ channels have the potential to cover a significant portion of the parameter space of the Type-II seesaw complex scalar triplet model.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- January 2019
- DOI:
- 10.1007/JHEP01(2019)101
- arXiv:
- arXiv:1810.09450
- Bibcode:
- 2019JHEP...01..101D
- Keywords:
-
- Beyond Standard Model;
- Hadron-Hadron scattering (experiments);
- Higgs physics;
- High Energy Physics - Phenomenology
- E-Print:
- 35 pages, 13 figures