Abstract.
A search for pair-produced charged Higgs bosons was performed in the data collected by the DELPHI detector at LEP II at centre-of-mass energies from 189 GeV to 209 GeV. Five different final states, \(\tau^ + \nu_{\tau}\tau^- \bar{\nu}_{\tau}\), \(\mathrm{c}\bar{\mathrm{s}}\bar{\mathrm{c}}\mathrm{s}\), \(\mathrm{c}\bar{\mathrm{s}}{\tau^- \bar{\nu}_{\tau}}\), \(\mathrm{W}^*\!\mathrm{A}\mathrm{W}^*\!\mathrm{A}\) and \(\mathrm{W}^*\!\mathrm{A}\tau^- \bar{\nu}_{\tau}\) were considered, accounting for the major expected decays in type I and type II Two Higgs Doublet Models. No significant excess of data compared to the expected Standard Model processes was observed. The existence of a charged Higgs boson with mass lower than 76.7 GeV/c 2 (type I) or 74.4 GeV/c 2 (type II) is excluded at the 95% confidence level, for a wide range of the model parameters. Model independent cross-section limits have also been calculated.
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Received: 30 September 2003, Revised: 12 February 2004, Published online: 8 April 2004
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The DELPHI Collaboration. Search for charged Higgs bosons at LEP in general two Higgs doublet models. Eur. Phys. J. C 34, 399–418 (2004). https://doi.org/10.1140/epjc/s2004-01732-6
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DOI: https://doi.org/10.1140/epjc/s2004-01732-6