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 vΔ, 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 vΔ and determination of the Higgs portal couplings λ4 and λ5. We also find that these two channels are complementary to indirect determination of λ4 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.
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Du, Y., Dunbrack, A., Ramsey-Musolf, M.J. et al. Type-II seesaw scalar triplet model at a 100 TeV pp collider: discovery and higgs portal coupling determination. J. High Energ. Phys. 2019, 101 (2019). https://doi.org/10.1007/JHEP01(2019)101
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DOI: https://doi.org/10.1007/JHEP01(2019)101