Improved full one--loop corrections to A^0 -> \sq_1 \sq_2 and \sq_2 -> \sq_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 quarks in the minimal supersymmetric extension of the Standard Model (MSSM). Due to the complex structure of the electroweak sector a proper renormalization of many parameters in the on-shell renormalization scheme is necessary. For the decay into sbottom quarks, especially for large tanb, the corrections can be very large in the on-shell renormalization scheme, which makes the perturbation series unreliable. We solve this problem by an appropriate definition of the tree-level coupling in terms of running quark masses and running trilinear couplings A_q. We also discuss the decay of heavy scalar quarks into light scalar quarks and A^0. We find that the corrections are significant and therefore cannot be neglected.

arXiv comment15 pages, 9 figures, Fig. 8 corrected

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Cited by in corpus (15)

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• Heavy Scalar Top Quark Decays in the Complex MSSM: A Full One-Loop Analysis
• 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
• Next-to-Leading Order NMSSM Decays with CP-odd Higgs Bosons and Stops
• Full O(alpha) corrections to e+e- -> sf_i sf_j
• Complete one--loop corrections to e+e- -> sf_i sf_j
• Complete one-loop corrections to decays of charged and CP-even neutral Higgs bosons into sfermions
• 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
• Full one-loop supersymmetric electroweak corrections to $t\bar{t}{h}^0$ associated production in $e^{+}{e}^{-}$ annihilation
• Full one-loop supersymmetric corrections to charged Higgs boson pair production in $\gamma \gamma$ collisions
• Full one-loop QCD and electroweak corrections to sfermion pair production in $\gamma \gamma$ collisions