"Figure 6b - Obs.Comb contour" of "Combination of searches for singly produced vector-like top quarks in pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector"

Obs.Comb 95% CL exclusion limits on the universal coupling constant $\kappa$ as a function of the $T$ quark mass in the SU(2) doublet representations for the combination. Limits are only presented in the regime $\Gamma_{\mathrm{T}}/m_{\mathrm{T}} < 50\%$, where the theory calculations are known to be valid.

观测组合（Observation Combination，Obs.Comb）中，针对SU(2)二重态表示下普适耦合常数κ（作为T夸克质量的函数）的95%置信水平（Confidence Level，CL）排除限值。这些限值仅在Γ_T/m_T <50%的范围内给出，该范围是理论计算已知有效的区域。