  At hadron colliders the $\gamma\gamma+jet$ channel provides larger
signal-to-background ratio in comparison with inclusive $\gamma\gamma$ channel
in hunting for scalars uncharged under the SM gauge group. At NLO in QCD
perturbation theory we evaluate selfconsistently the signal significance for
the SM Higgs boson production in $\gamma\gamma+jet$ channel at LHC. Three-body
final state kinematics allows for refined cuts. The adjustment of these cuts
increases the signal significance upto the level of inclusive channel. Applying
a justified simple rescaling procedure to the results obtained for SM Higgs
boson, we estimate the LHC prospects in searches for radion and sgoldstino in
$\gamma\gamma+jet$ channel. We have found that this channel is comparable with
$\gamma\gamma$ channel in searches for new physics and deserves further
detailed investigations.
