2004/04/07 by The DELPHI Collaboration, J. Abdallah · 4 citations
Physics and Astronomy · #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1140/epjc/s2004-01732-6
published as Eur.Phys.J.C34:399-418,2004 · 42 pages, 19 figures, Accepted by Eur. Phys. J. C
openalex publication_date 2004/04/07 · arxiv created 2004/04/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
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+ nutau tau- anti-nutau, c sbar cbar s, c sbar tau- anti-nutau, W* A W* A and W* A tau- anti-nutau 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/c2 (type I) or 74.4 GeV/c2 (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.