https://doi.org/10.1140/epjc/s10052-021-08844-z
Regular Article – Theoretical Physics
Triply charged Higgs bosons at a 100 TeV pp collider
1
School of Physics and Information Engineering, Shanxi Normal University, 041004, Linfen, China
2
Department of Physics, National Taiwan University, 10617, Taipei, Taiwan
3
Tsung-Dao Lee Institute, and School of Physics and Astronomy, Shanghai Jiao Tong University, 200240, Shanghai, China
4
Physics Division, National Center for Theoretical Sciences, 30013, Hsinchu, Taiwan
5
Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts Amherst, 01003, Amherst, MA, USA
Received:
21
April
2020
Accepted:
8
January
2021
Published online:
18
January
2021
In this work, we study the potential of searching for triply charged Higgs boson originating from a complex Higgs quadruplet in the final state with at least three same-sign leptons. A detailed collider analysis of the SM backgrounds and signals is performed at a 100 TeV pp collider for the triply charged Higgs boson mass below 1 TeV and the Higgs quadruplet vacuum expectation value 
ranging from 
to 
and the mass splitting 
between the nearby states of the Higgs quadruplet satisfying 
. About 
of data are required at most for 
discovery. We also revisit the sensitivity at the Large Hadron Collider (LHC) and find that discovery of the triply charged Higgs boson below 1 TeV can be reached for a relatively small . For example, if 
and 
, the integrated luminosity of 
is needed. But for a relatively large , i.e., 
, the triply charged Higgs boson above about 800 GeV cannot be discovered even in the high-luminosity LHC era. For 
, the cascade decays are open and the sensitivity can be improved depending on the value of .
© The Author(s) 2021
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