A search for a charged Higgs boson is performed with a data sample corresponding to an integrated luminosity of 19.7 ± 0.5 fb-1 collected with the CMS detector in proton-proton collisions at √s = 8,TeV. The charged Higgs boson is searched for in top quark decays for mH± < mt - mb, and in the direct production pp → t(b)H± for mH± > mt - mb. The H± → τ±ντ and H± → tb decay modes in the final states τh + jets, μτh, l+jets, and ll' (l = e, μ) are considered in the search. No signal is observed and 95% confidence level upper limits are set on the charged Higgs boson production. A model-independent upper limit on the product branching fraction B(t → H±b) B(H± → τ±ντ ) = 1.2-0.15% is obtained in the mass range mH± = 80-160 GeV, while the upper limit on the cross section times branching fraction σ(pp → t(b)H±) B(H± → τ±ντ) = 0.38-0.025 pb is set in the mass range mH+ = 180-600 GeV. Here, σ(pp → t(b)H±) stands for the cross section sum (pp → t‾(b)H+) + σ(pp → t(b‾)H-). Assuming B(H± → tb) = 1, an upper limit on σ(pp → t(b)H±) of 2.0-0.13 pb is set for mH± = 180-600 GeV. The combination of all considered decay modes and final states is used to set exclusion limits in the mH± -tanβ parameter space in different MSSM benchmark scenarios.
|Number of pages||64|
|Journal||Journal of High Energy Physics|
|Publication status||Published - 2015|
- Hadron-Hadron Scattering
- Higgs physics