Projected sensitivity to dimension-6 triple gauge couplings at the FCC-hh

In this study, we investigate the process $pp\to {W}^{±}\gamma $ for the physics potential of the FCC-hh with $\sqrt{s}=100$ TeV to examine the anomalous WWγ couplings defined by three CP-conserving and two CP-violating effective operators of dimension-6. The analysis containing the realistic detector effects is carried out in the mode where ${W}^{±}$ bosons in the final state decay into the leptonic channel. The best sensitivities obtained from the process $pp\to {W}^{±}\gamma $ on the anomalous couplings ${C}_{WWW}/{\Lambda }^{2}$ and ${C}_{W,B}/{\Lambda }^{2}$ determined by CP-conserving effective Lagrangians are $\left[-0.010;0.010\right]$ TeV$^{−2}$ and $\left[-0.40;0.41\right]$ TeV$^{−2}$, while ${C}_{\stackrel{˜}{W}WW}/{\Lambda }^{2}$ and ${C}_{\stackrel{˜}{W}}/{\Lambda }^{2}$ couplings defined by CP-violating effective Lagrangian are obtained as $\left[-0.003;0.003\right]$ TeV$^{−2}$ and $\left[-0.32;0.33\right]$ TeV$^{−2}$ at the FCC-hh with ${L}_{int}=30$ ab$^{−1}$. However, if the systematic uncertainty is included, we obtain reduced sensitivities on the anomalous WWγ coupling. The results are compared for assumed systematics of 5% and 10%.