1 research outputs found
QCD correction to gluino decay to in the MSSM
We calculate the complete next-to-leading order QCD corrections to the
three-body decay of gluino into top-pair associated with a lightest neutralino
in the minimal supersymmetric standard model. We obtain that the LO and NLO QCD
corrected decay widths of at the
benchmark point are and 0.1069 GeV respectively, and
the relative correction is -28.2%. We investigate the dependence of the QCD
correction to on and the
masses of gluino, scalar top quarks and the lightest neutralino around the
benchmark point, separately. We find that the NLO QCD corrections
suppress the LO decay width, and the absolute relative correction can exceed
30% in some parameter space. Therefore, the QCD corrections to the three-body
decay should be taken into account for
the precise experimental measurement at future colliders. Moreover, we study
the distributions of the top-pair invariant mass () and the
missing energy (), and find that the line shapes of the LO
distributions of and are not obviously distorted by
the NLO QCD corrections.Comment: 23 pages, 10 figure