Searches for top-Higgs FCNC couplings via the Whj signal with h → γγ at the LHC

In this paper, we investigated the process pp -> W(-)hj induced by the top-Higgs flavor-changing neutral current couplings at the LHC. We found that the cross section of pp. W(-)hj mainly comes from the resonant process pp -> W(-)t -> W(-)hq due to the anomalous tqH couplings (where q denotes up and charm quarks). We further studied the observability of the top-Higgs flavor-changing neutral current couplings through the process pp -> W-(-> l(-)(nu) over bar (l) h(-> gamma gamma)j and found that the branching ratios Br(t -> qh)can be probed to 0.16% at 3 sigma level at 14 TeV LHC with an integrated luminosity of 3000 fb(-1).