LHC prospects in searches for neutral scalars in ppγγ+jet: SM Higgs boson, radion, sgoldstino
Abstract
At hadron colliders the γγ+jet channel provides larger signal-to-background ratio in comparison with inclusive γγ 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 γγ+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 γγ+jet channel. We have found that this channel is comparable with γγ channel in searches for new physics and deserves further detailed investigations.
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