Abstract
We explored the prospect of looking for a fermiophobic charged Higgs (H±) via the same sign trilepton signal at the LHC. A fermiophobic scenario appears in the type-I two Higgs doublet model where the coupling of the H± with the Standard Model fermions is inversely proportional to tan β. Almost all the experimental searches rely on the fermionic production and decay of the charged Higgs. Consequently, the limit on H± for fermiophobic scenarios is non-existent unless tan β is small. We show that for a fermiophobic case, the electroweak production of H± is dominant for most of the parameter space. Subsequent bosonic decay of the charged and neutral Higgses give rise to the same sign trilepton signal. With a thorough phenomenological analysis, we demonstrate that the same sign trilepton signal can be an excellent complementary search to explore the high tan β regions.
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Mondal, T., Sanyal, P. Same sign trilepton as signature of charged Higgs in two Higgs doublet model. J. High Energ. Phys. 2022, 40 (2022). https://doi.org/10.1007/JHEP05(2022)040
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DOI: https://doi.org/10.1007/JHEP05(2022)040