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  • Search for charged Higgs bo...
    Heister, A; Brunelière, R; Goy, C; Jezequel, S; Lees, J.-P; Minard, M.-N; Pietrzyk, B; Boix, G; Fernandez, E; Creanza, D; De Filippis, N; de Palma, M; Maggi, G; Nuzzo, S; Ranieri, A; Silvestris, L; Huang, X; Ouyang, Q; Wang, T; Zhang, L; Azzurri, P; Barklow, T; Buchmüller, O; Cerutti, F; Clerbaux, B; Frank, M; Hutchcroft, D.E; Janot, P; Jost, B; Mato, P; Moutoussi, A; Ranjard, F; Schlatter, D; Tejessy, W; Videau, I; Falvard, A; Monteil, S; Pallin, D; Perret, P; Markou, C; Simopoulou, E; Blondel, A; Brient, J.-C; Focardi, E; Bossi, F; Capon, G; Laurelli, P; Mannocchi, G; Murtas, G.P; Kennedy, J; Thompson, A.S; Hanke, P; Cameron, W; Dornan, P.J; Girone, M; Hill, R.D; Marinelli, N; Girtler, P; Pearson, M.R; Delaere, C; Hölldorfer, F; Renk, B; Sander, H.-G; Zeitnitz, C; Bonissent, A; Ealet, A; Tilquin, A; Ragusa, F; Ganis, G; Männer, W; Moser, H.-G; Wolf, G; Callot, O; Davier, M; Duflot, L; Grivaz, J.-F; Serin, L; Yuan, C; Foà, L; Messineo, A; Jones, L.T; Medcalf, T; Bloch-Devaux, B; Fabbro, B; Vallage, B; Taylor, G; Combley, F; Lehto, M; Thompson, L.F; Böhrer, A; Brandt, S; Grupen, C; Hess, J; Ngac, A; Ferguson, D.P.S; Hayes, O.J; Kile, J; Wiedenmann, W; Wu, J; Zobernig, G

    Physics letters. B, 09/2002, Letnik: 543, Številka: 1
    Journal Article

    A search for charged Higgs bosons produced in pairs is performed with data collected at centre-of-mass energies ranging from 189 to 209 GeV by ALEPH at LEP, corresponding to a total luminosity of 629 pb −1. The three final states τ +ν ττ − ν ̄ τ , c s ̄ τ − ν ̄ τ and c s ̄ s c ̄ are considered. No evidence for a signal is found and lower limits are set on the mass m H ± as a function of the branching fraction  B( H +→τ +ν τ ) . In the framework of a two-Higgs-doublet model, and assuming B( H +→τ +ν τ )+ B( H +→c s ̄ )=1 , charged Higgs bosons with masses below 79.3 GeV/ c 2 are excluded at 95% confidence level independently of the branching ratios.