We study radiative decays of T to light quark jets in nonrelativistic QCD by taking both the color singlet and color octet b5 operators into consideration. The cut for quark jet energy and cut for the angle between two quark jets are introduced. The sensitivity to the soft and collincar singularities in the loop integrals are greatly reduced by these cuts. With the jet energy cut of about 1 GeV, and the jet angle cut of about 36°, the branching ratio for γ→γqqis found to be 8.2×10~(-4) from color singlet contributions. The color octet contributions could be much larger than that of color singlet, depending on the estimate of the color octet matrix elements. This process may provide a new test for the color octet mechanism in nonrelativistic QCD. We study radiative decays of T to light quark jets in nonrelativistic QCD by taking both both color singlet and color octet b5 operators into consideration. The cut for quark jet energy and cut for the angle between two quark jets are presented. The sensitivity to the soft and the collincar singularities in the loop integrals are greatly reduced by these cuts. With the jet energy cut of about 1 GeV, and the jet angle cut of about 36 °, the branching ratio for γ → γqqis found to be 8.2 × 10 ~ 4) from color singlet contributions. The color octet contributions could be much larger than that of color singlet, depending on the estimate of the color octet matrix elements. This process may provide a new test for the color octet mechanism in nonrelativistic QCD.