Studying Same-Sign Top Pair Production through Top-Higgs FCNC Interactions at the HL-LHC

Figure 4

Estimated cross sections according to coupling constant of two same-sign lepton signal in FCNC processes. As we can see, the main contribution comes from positively charged top pair due to higher parton distributions of valance quarks at proton which differs nearly one order of magnitude. Nevertheless, adding production, we use negatively charged lepton pair to enhance the signal process. We assume all FCNC coefficients are the same and all channels are open (to state exactly we use case).