"95% CL upper limits on $t\rightarrow cX$ BR" of "Search for a new scalar resonance in flavour-changing neutral-current top-quark decays $t \rightarrow qX$ ($q=u,c$), with $X \rightarrow b\bar{b}$, in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

Expected and observed 95% CL upper limits for $\mathcal{B}$($t \rightarrow cX$) $\times$ $\mathcal{B}$($X \rightarrow b\bar{b}$). The bands surrounding the expected limits show the 68% and 95% confidence intervals, respectively.

针对分支比（Branching Ratio）的乘积$mathcal{B}(t
ightarrow cX) imes mathcal{B}(X
ightarrow bar{b})$的95%置信度（Confidence Level, CL）预期上限与观测上限。预期上限周边的能带分别对应68%与95%的置信区间（Confidence Interval）。