  Search for light (within the mass range 84-200 GeV) doubly-charged Higgs
bosons decaying into a pair of W-bosons has been deemed challenging using the
conventional LHC searches with leptons, jets and missing transverse momentum in
the final state. Such Higgses together with slightly heavier singly-charged and
neutral Higgses, when arranged in an $SU(2)_L$ triplet as in the type-II
see-saw model, are lately shown to accommodate the recent measurement of the
$W$-boson mass by the CDF collaboration. These, when produced in a highly
Lorentz-boosted regime, tend to manifest themselves as a single fat-jet or a
pair of adjacent same-sign leptons plus missing transverse momentum. First, we
perform a multivariate analysis to discern such exotic jets from the SM jets.
Then, we present a novel search in the final state with an exotic jet and two
same-sign leptons plus missing transverse momentum. We find that such low-mass
doubly-charged Higgsses could be directly probed with the already collected Run
2 LHC data.
