Search for charged Higgs bosons in ATLAS using the τ+jets final state

The results of searches for charged Higgs bosons decaying to a τ lepton and a neutrino are pre- sented. These searches use 19.5 fb−1 of proton-proton collision data at √s = 8 TeV taken by the ATLAS experiment at the LHC, and consider cases where charged Higgs bosons are lighter or heavier than the top quark. Only final states with hadronically decaying τ leptons and additional jets from a hadronically decaying W boson are taken into account. No excess of data over the expected Standard Model background is observed. Limits are set on the product of branching ratios B(t → H+b)×B(H+ → τ+ν) for charged Higgs bosons lighter than the top quark and on the production cross section times branching ratio σ(pp → t ̄H+X)×B(H+ → τ+ν) for charged Higgs bosons that are heavier than the top quark.