2010/12/31 by Andreas Crivellin · 65 citations
Mathematics · Physics and Astronomy · #Higgs boson #Minimal Supersymmetric Standard Model #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #advanced mathematical theories #hep-ph
paper · pdf · doi:10.1103/physrevd.83.056001
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 83(5) (American Physical Society) · 17 pages, 5 figures, references added, figure added, version accepted for publication in PRD, typos corrected
openalex publication_date 2011/03/01 · arxiv created 2012/06/12 · arxiv updated 2015/03/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this article we consider chirally enhanced corrections to Higgs vertices in the most general MSSM. We include the contributions stemming from bilinear terms, from the trilinear A terms, and from their nonholomorphic analogues, the A^\ensuremath' terms, which couple squarks to the ``wrong'' Higgs field. We perform a consistent renormalization of the Higgs vertices beyond the decoupling limit (MSUSY\ensuremath→\ensuremath∞), using a purely diagrammatic approach. The cancellation of the different contributions in and beyond the decoupling limit is discussed and the possible size of decoupling effects which occur if the supersymmetry particles are not much heavier than the electroweak scale are examined. In the decoupling limit we recover the results obtained in the effective-field-theory approach. For the nonholomorphic A^\ensuremath' terms we find the well known tan\ensuremathβ enhancement in the down sector similar to the one for terms proportional to \ensuremathμ. Because of the a priori generic flavor structure of these trilinear terms large flavor-changing neutral Higgs couplings can be induced. We also discover new tan\ensuremathβ enhanced contributions involving the usual holomorphic A terms, which were not discussed before in the literature. These corrections occur only if also flavor-diagonal nonholomorphic corrections to the Higgs couplings are present. This reflects the fact that the A terms, and also the chirality-changing self-energies, are physical quantities and cannot be absorbed into renormalization constants.