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Supersymmetric QCD corrections to Higgs-b production: Is the Δb approximation accurate?

S. Dawson1, C. B. Jackson2, and P. Jaiswal1,3

  • 1Department of Physics, Brookhaven National Laboratory, Upton, New York 11973, USA
  • 2Physics Department, University of Texas, Arlington, Texas
  • 3Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, New York 11790, USA

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Phys. Rev. D 83, 115007 – Published 8 June, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.115007

Abstract

The associated production of a Higgs boson with a b quark is a discovery channel for the lightest MSSM neutral Higgs boson. We consider the supersymmetric QCD contributions from squarks and gluinos and discuss the decoupling properties of these effects. A detailed comparison of our exact O(αs) results with those of a widely used effective Lagrangian approach, the Δb approximation, is presented. The Δb approximation is shown to accurately reproduce the exact one-loop supersymmetric QCD result to within a few percent over a wide range of parameter space.

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Phys. Rev. D 83, 115007– Published 8 June, 2011
  • Received 11 April 2011
Article part of CHORUS

© 2011 American Physical Society

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