Henan Normal Unv, Dept Phys, Xinxiang 453002, Peoples R China
; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
; CCAST, World Lab, Beijing 100080, Peoples R China
; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China
The one-loop supersymmetric (SUSY) QCD radiative correction to the gb-->tH(-) cross section is calculated in the minimal supersymmetric standard model. We find that SUSY QCD is nondecoupling if the gluino mass and the parameters mu, A(t), and A(b) are of the same order and get large. The nondecoupling contribution can be enhanced by large tan beta and therefore large corrections to the hadronic production rates at the Fermilab Tevatron and CERN Large Hadron Collider (LHC) are expected in the large tan beta limit. The fundamental reason for such nondecoupling behavior is that some couplings in the loops are proportional to the SUSY mass parameters.