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Bonn 2001 – wissenschaftliches Programm

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T: Teilchenphysik

T 606: Higgs-Bosonen 2

T 606.1: Vortrag

Donnerstag, 29. März 2001, 10:00–10:15, HS V

Associated W±H production by gluon fusion at the LHC — •Oliver Brein1, Wolfgang Hollik1, and Shinya Kanemura21Institut für Theoretische Physik, Universität Karlsruhe, 76128 Karlsruhe — 2Physics and Astronomy Department, Michigan State University, MI 48824-1116, USA

The associated W±H production in pp collision is discussed for the Large Hadron Collider. A complete one-loop calculation of the loop-induced subprocess ggW±H is presented in the framework of the Minimal Supersymmetric Standard Model, and the possible enhancement of the hadronic cross section is investigated under the constraint from the squark direct-search results and the low-energy precision data. The squark-loop contributions turn out to be comparable with the quark-loop ones. In particular, the hadronic cross section via gluon fusion can be extensively enhanced by squark-pair threshold effects in the box-type diagrams, so that it can reach the size of the hadronic cross section via the subprocess b bW±H which appears at tree level.

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