Projected Sensivity to Dimension-6 Triple Gauge Couplings at the FCC-hh

Abstract

In this study, we investigate the process $pp\to W^{\pm }{\hat{I}}^3$ for the physics potential of the FCC-hh with $\sqrt{s}=100$ TeV to examine the anomalous $WW{\hat{I}}^3$ 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 $W^{\pm }$ bosons in the final state decay into the leptonic channel. The best sensitivities obtained from the process $pp\to W^{\pm }{\hat{I}}^3$ on the anomalous couplings $C_{WWW}/\hat{I}{›}^2$ and $C_{W,B}/\hat{I}{›}^2$ determined by CP-conserving effective Lagrangians are $[-0.01;0.01]$ TeV${}^{-2}$ and $[-0.88;0.88]$ TeV${}^{-2}$, while $C_{\tilde{W}WW}/\hat{I}{›}^2$ and $C_{\tilde{W}}/\hat{I}{›}^2$ couplings defined by CP-violating effective Lagrangian are obtained as $[-0.03;0.03]$ TeV${}^{-2}$ and $[-0.47;0.47]$ TeV${}^{-2}$ at the FCC-hh with $\sqrt{s}=100$ TeV, $L_{int}=30$ ab${}^{-1}$. However, if the systematic uncertainty is included, we obtain reduced sensitivities on the anomalous $WW{\hat{I}}^3$ coupling . The results are compared for assumed systematics of $5\%$ and $10\%$.

17 pages, 6 Figures and Tables IV