Fig. 19.

Exclusion limits at $95\%$ CL in the scenario where both pair-produced stop decay exclusively via a ${\tilde{t}}_1^{}\to b{\tilde{\mathit{\chi }}}_1^{\pm }$ followed by ${\tilde{\mathit{\chi }}}_1^{\pm }\to W{\tilde{\mathit{\chi }}}_1^0$, with $\mathrm{\Delta }m({\tilde{t}}_1^{},{\tilde{\mathit{\chi }}}_1^{\pm })=10\mathrm{GeV}$, and b three-body or four-body decay (depending on the neutralino and stop mass). The black dashed line indicates the expected limit, and the yellow band indicates the $\pm 1\mathit{\sigma }$ uncertainties, which include all uncertainties except the theoretical uncertainties in the signal. The red solid line indicates the observed limit, and the red dotted lines indicate the sensitivity to $\pm 1\mathit{\sigma }$ variations of the signal theoretical uncertainties. For b, the observed limits achieved by the t1L and t2L analyses are also shown, and the straight dashed lines correspond to $\mathrm{\Delta }m({\tilde{t}}_1^{},{\tilde{\mathit{\chi }}}_1^0)=m_W+m_b$ and $\mathrm{\Delta }m({\tilde{t}}_1^{},{\tilde{\mathit{\chi }}}_1^0)=m_t$