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Abbiendi, G.; Åkesson, P. F.; Alexander, G.; Anagnostou, G.; Asai, S.; Bailey, I.; Batley, R. J.; Behnke, T.; Bell, P. J.; Bella, G.; Bellerive, A.; Benelli, G.; Bethke, S.; Biebel, O.; Boeriu, O.; Bock, P.; Boutemeur, M.; Brown, R. M.; Burckhart, H. J.; Capiluppi, P.; Carter, J. R.; Dallavalle, M.; Desch, K.; Dubbert, J.; Duchovni, E.; Duckeck, G.; Fabbri, F.; Ferrari, P.; Fiedler, F.; Fleck, I.; Ford, M.; Gagnon, P.; Geich-Gimbel, C.; Giunta, M.; Hajdu, C.; Hawkings, R.; Herten, G.; Heuer, R. D.; Hoffman, K.; Igo-Kemenes, P.; Ishii, K.; Kanzaki, J.; Karlen, D.; Kawagoe, K.; Keeler, R. K.; Kellogg, R. G.; Kennedy, B. W.; Kluth, S.; Kobel, M.; Krämer, T.; Krasznahorkay, A.; Krieger, P.; Lafferty, G. D.; Lanske, D.; Lellouch, D.; Levinson, L.; Lillich, J.; Lloyd, S. L.; Loebinger, F. K.; McKenna, J.; Menges, W.; Mes, H.; Meyer, N.; Mihara, S.; Miller, D. J.; O’Neale, S. W.; Oh, A.; Okpara, A.; Pahl, C.; Pater, J. R.; Pinfold, J.; Plane, D. E.; Przybycień, M.; Quadt, A.; Rembser, C.; Renkel, P.; Roney, J. M.; Rossi, A. M.; Rozen, Y.; Sachs, K.; Saeki, T.; Sarkisyan, E. K. G.; Schaile, A. D.; Scharff-Hansen, P.; Schumacher, M.; Seuster, R.; Skuja, A.; Söldner-Rembold, S.; Ströhmer, R.; Toya, D.; Trócsányi, Z.; Turner-Watson, M. F.; Ujvári, B.; Vollmer, C. F.; Ward, C. P.; Wolf, G.; Yamashita, S.; Zer-Zion, D.; Zivkovic, L.
The European physical journal. C, Particles and fields, 01/2012, Letnik: 72, Številka: 7Journal Article
A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at \documentclass12pt{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\sqrt{s}=189\mbox{--}209\ \mbox{GeV}$\end{document} , corresponding to an integrated luminosity of approximately 600 pb −1 . Charged Higgs bosons are assumed to be pair-produced and to decay into \documentclass12pt{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mathrm{q} \bar{\mathrm{q}}$\end{document} , τν τ or AW ± . No signal is observed. Model-independent limits on the charged Higgs-boson production cross section are derived by combining these results with previous searches at lower energies. Under the assumption \documentclass12pt{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mathrm{BR} (\mathrm{H}^{\pm} \to \tau\nu_{\tau}) + \mathrm{BR} (\mathrm{H}^{\pm} \to \mathrm{q} \bar{\mathrm{q}}) = 1$\end{document} , motivated by general 2HDM type II models, excluded areas on the \documentclass12pt{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$m_{\mathrm{H}^{\pm}} , \mathrm{BR} (\mathrm {H}^{\pm} \to \tau\nu_{\tau})$\end{document} plane are presented and charged Higgs bosons are excluded up to a mass of 76.3 GeV at 95 % confidence level, independent of the branching ratio BR(H ± → τν τ ). A scan of the 2HDM type I model parameter space is performed and limits on the Higgs-boson masses \documentclass12pt{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$m_{\mathrm{H}^{\pm}}$\end{document} and m A are presented for different choices of tan β .
