Probing anomalous $tqgamma$ and $tqg$ couplings via single top production in association with photon at FCC-hh


Abstract in English

We study the anomalous FCNC $tqgamma$ and $tqg$ couplings via $ppto Wbgamma+X$ signal process including realistic detector effects for both leptonic and hadronic decay channels of the W boson at 100 TeV FCC-hh. The relevant background are considered in the cut based analysis to obtain not only limits on the anomalous $lambda$ and $zeta$ couplings but also branching ratios of $tto qgamma$ and $tto qg$ decay channels. We find that the sensitivity to the branching ratio of $t to q gamma$ channel is three order better than the available LHC experimental limits, and it is comparable for the branching ratio of the $tto qg$ decay channel with an integrated luminosity of 10 ab$^{-1}$ at 2$sigma$ significance level.

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