Decay widths of the neutral \(\mathcal{CP}\)-even MSSM Higgs bosons in the Feynman-diagrammatic approach

  • S. Heinemeyer
  • W. Hollik
  • G. Weiglein
Theoretical physics


In the Minimal Supersymmetric Standard Model (MSSM) we incorporate the Higgs-boson propagator corrections, evaluated up to two-loop order, into the prediction of \(\Gamma(h \to f\bar f)\) and \(BR(h \to f \bar f)\) for \(f = b, c, \tau\). The propagator corrections consist of the full one-loop contribution, including the effects of non-vanishing external momentum, and corrections of \(\mathcal{O}(\alpha\alpha_s)\) at the two-loop level. The results are supplemented with the dominant one-loop QED corrections and final state QCD corrections from both gluons and gluinos. The effects of the two-loop propagator corrections and of the one-loop gluino contributions are investigated in detail. Our results are compared with the result obtained within the renormalization group approach. Agreement within 10% is found for most parts of the MSSM parameter space.


Higgs Boson Minimal Supersymmetric Standard Model Decay Width External Momentum Renormalization Group Approach 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • S. Heinemeyer
    • 1
  • W. Hollik
    • 2
  • G. Weiglein
    • 3
  1. 1.DESY Theorie, Notkestrasse 85, 22603 Hamburg, Germany DE
  2. 2.Institut für Theoretische Physik, Universität Karlsruhe, 76128 Karlsruhe, Germany DE
  3. 3.CERN, TH Division, 1211 Geneva 23, Switzerland CH

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