Probing anomalous $tq{\hat{I}}^3$ and $tqg$ couplings via single top production in association with photon at FCC-hh

Abstract

We study the anomalous FCNC $tq{\hat{I}}^3$ and $tqg$ couplings via $pp\to Wb{\hat{I}}^3+X$ 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 $\hat{I}»$ and $\hat{I}\P$ couplings but also branching ratios of $t\to q{\hat{I}}^3$ and $t\to qg$ decay channels. We find that the sensitivity to the branching ratio of $t\to q{\hat{I}}^3$ channel is three order better than the available LHC experimental limits, and it is comparable for the branching ratio of the $t\to qg$ decay channel with an integrated luminosity of 10 ab${}^{-1}$ at 2$\ddot{I}ƒ$ significance level.

18 pages, 7 figures, 4 tables, accepted version by Eur. Phys. J. C