Improved full one-loop corrections to A^0 -> \sf_1 \sf_2 and \sf_2 -> \sf_1 A^0

Abstract

We calculate the full electroweak one-loop corrections to the decay of the CP-odd Higgs boson A^0 into scalar fermions in the minimal supersymmetric extension of the Standard Model. For this purpose many parameters of the MSSM have to be properly renormalized in the on-shell renormalization scheme. We have also included the SUSY-QCD corrections. For the decay into bottom squarks and tau sleptons, especially for large \tan\b, the corrections can be very large making the perturbation expansion unreliable. We solve this problem by an appropriate definition of the tree-level coupling in terms of running fermion masses and running trilinear couplings A_f. We also discuss the decay of heavy scalar fermions into light scalar fermions and A^0. We find that the corrections can be sizeable and therefore cannot be neglected.

arXiv comment42 pages, 20 figures (23 eps-files)

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Cited by in corpus (13)

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• Full one-loop corrections to neutralino pair production in e+e- annihilation
• Heavy Higgs Decays into Sfermions in the Complex MSSM: A Full One-Loop Analysis
• HFOLD - a program package for calculating two-body MSSM Higgs decays at full one-loop level
• Next-to-Leading Order NMSSM Decays with CP-odd Higgs Bosons and Stops
• Full O(alpha) corrections to e+e- -> sf_i sf_j
• Pair Production of Charged Higgs Bosons from Bottom-Quark Fusion
• Complete one-loop corrections to decays of charged and CP-even neutral Higgs bosons into sfermions
• Effective Lagrangian for $\bar{q}{\tilde{q}}_i^{\prime }{\chi }_j^{+}$, $\bar{q}{\tilde{q}}_i^{\prime }{\chi }_j^0$ interactions and Fermionic Decays of the Squarks with CP Phases
• Full one-loop corrections to SUSY Higgs boson decays into charginos
• Full one-loop electroweak and NLO QCD corrections to the associated production of chargino and neutralino at hadron colliders
• Impact of CP phases on SUSY particle production and decays