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Title: Type-II seesaw scalar triplet model at a 100 TeV pp collider: discovery and higgs portal coupling determination

Journal Article · · Journal of High Energy Physics (Online)
ORCiD logo [1];  [2];  [3];  [4]
  1. Univ. of Massachusetts, Amherst, MA (United States); DOE/OSTI
  2. Stony Brook Univ., NY (United States)
  3. Univ. of Massachusetts, Amherst, MA (United States); California Institute of Technology (CalTech), Pasadena, CA (United States)
  4. Univ. of Massachusetts, Amherst, MA (United States); Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences (CAS), Beijing (China)

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±±HW±W±hW/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 hγγ 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.

Research Organization:
Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0011095
OSTI ID:
1611587
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 1 Vol. 2019; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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