The Higgs boson masses and mixings of the complex MSSM in the Feynman-diagrammatic approach | Zendy

Meikel Frank | Zendy; Thomas Hahn | Zendy; S. Heinemeyer | Zendy; W. Hollik | Zendy; Heidi Rzehak | Zendy; G. Weiglein | Zendy

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The Higgs boson masses and mixings of the complex MSSM in the Feynman-diagrammatic approach

Author(s) -

Meikel Frank,

Thomas Hahn,

S. Heinemeyer,

W. Hollik,

Heidi Rzehak,

G. Weiglein

Publication year - 2007

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2007/02/047

Subject(s) - higgs boson , physics , feynman diagram , particle physics , resummation , boson , renormalization , diagrammatic reasoning , minimal supersymmetric standard model , mathematical physics , quantum chromodynamics , computer science , programming language

New results for the complete one-loop contributions to the masses and mixingeffects in the Higgs sector are obtained for the MSSM with complex parametersusing the Feynman-diagrammatic approach. The full dependence on all relevantcomplex phases is taken into account, and all the imaginary parts appearing inthe calculation are treated in a consistent way. The renormalization isdiscussed in detail, and a hybrid on-shell/DRbar scheme is adopted. We alsoderive the wave function normalization factors needed in processes withexternal Higgs bosons and discuss effective couplings incorporating leadinghigher-order effects. The complete one-loop corrections, supplemented by theavailable two-loop corrections in the Feynman-diagrammatic approach for theMSSM with real parameters and a resummation of the leading (s)bottomcorrections for complex parameters, are implemented into the public Fortrancode FeynHiggs2.5. In our numerical analysis the full results for theHiggs-boson masses and couplings are compared with various approximations, andCP-violating effects in the mixing of the heavy Higgs bosons are analyzed indetail. We find sizable deviations in comparison with the approximations oftenmade in the literature.Comment: 57 pages, 12 figures. Discussion about decoupling properties added, references added. Version to appear in JHE

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