“…First, a light charged Higgs boson, with mass M H + , below the top quark mass, m t , can be searched for in top quark decays, t → H ± b; second, the charged Higgs boson can be produced directly in various production mechanisms, in particular, in association with a top and bottom quark, pp → H ± tb. For a light charged Higgs boson with M H + < m t the first search type is typically more promising and has been in the focus of charged Higgs boson searches at the LHC during Run 1 with center-of-mass energies √ s = 7 and 8 TeV, looking for charged Higgs bosons decaying to τ ν [73,74], cs [75,76] or cb [77]. With the increased center-of-mass energy √ s = 13 TeV of the LHC during Run 2, the direct charged Higgs production, pp → H ± tb, becomes increasingly important, in particular, as it is sensitive to charged Higgs bosons heavier than the top quark.…”