QCD Corrections to Scalar Production via Heavy Quark Fusion at Hadron Colliders

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  • 6 December 1998
Abstract
We recently proposed that, due to the top-quark-mass enhanced Yukawa coupling, the s-channel production of a charged scalar or pseudo-scalar from heavy quark fusion can be an important new mechanism for discovering non-standard spin-0 particles. In this paper, we present the complete O(alpha_s) QCD corrections to this s-channel production process at hadron colliders, and furthermore, the results of QCD resummation over soft-gluon emission. The systematic QCD-improved production and decay rates at the FermiLab Tevatron and the CERN LHC are given for the charged top-pions in the topcolor models, and for the charged Higgs bosons in the generic two Higgs doublet model. The direct extension is studied to the production of the neutral (pseudo-)scalars from the bb\bar fusion for the minimal supersymmetric standard model (MSSM) with large tan(beta), and the topcolor model with large bottom Yukawa coupling.

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