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T: Fachverband Teilchenphysik

T 407: BSM Theorie II

T 407.6: Vortrag

Donnerstag, 8. März 2007, 18:00–18:15, KIP SR 2.402

MSSM Higgs-boson production in bottom-quark fusion: electroweak radiative corrections — Stefan Dittmaier¹, Michael Krämer², •Alexander Mück², and Tobias Schlüter¹ — ¹Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), München — ²Institut für Theoretische Physik E, RWTH Aachen

Higgs-boson production in association with bottom quarks is an important discovery channel for supersymmetric Higgs particles at hadron colliders for large values of tanβ. We present the complete O(α) electroweak and O(α_s) strong corrections to associated bottom–Higgs production through b b fusion in the MSSM and improve this next-to-leading-order prediction by known two-loop contributions to the Higgs self-energies, as provided by the program FeynHiggs. Choosing proper renormalization and input-parameter schemes, the bulk of the corrections (in particular the leading terms for large tanβ) can be absorbed into an improved Born approximation. The remaining non-universal corrections are typically of the order of a few per cent. Numerical results are discussed for the benchmark scenarios SPS 1b and SPS 4.