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Implications on the Supersymmetric Higgs sector from Top quark decays at the Tevatron

  • Guasch, Jaume
  • Sola, Joan
Published Article
Publication Date
Oct 07, 1997
Submission Date
Jul 31, 1997
DOI: 10.1016/S0370-2693(97)01247-1
arXiv ID: hep-ph/9707535
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From the tau-lepton analysis of the charged Higgs decay of the top quark at the Tevatron, t -> H+ b -> tau+ nu_{tau} b, it is possible to set rather stringent bounds on the (tan(beta),M_{H+})-plane, if one assumes that H+ is a charged member of a generic two-Higgs-doublet model. However, if we consider the possibility that H+ is supersymmetric, then we find that the allowed region in the (tan(beta),M_{H+})-plane can be significantly modified by the MSSM quantum corrections. Throughout our analysis we correlate the top quark results with the limits imposed by radiative and semileptonic B-meson decays. Remarkably, one can envision situations in the MSSM parameter space where H+ completely eludes those bounds, i.e. a charged Higgs with a mass below the top quark mass could coexist with essentially any value of tan(beta).

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