Fig. 20.

Comparison between data and prediction for the distribution of $H_{\mathrm{T}}^{\mathrm{nolep}}$, , defined as the scalar sum of the missing transverse momentum and the transverse momenta of all selected jets, in the high-$m_{\mathrm{T}}$ channels considered: (top) two $b$-tagged jets, (middle) three $b$-tagged jets and (bottom) four $b$-tagged jets, (left) before and (right) after the combined fit to data under the background-only hypothesis. The expected signal contributions from ${\tilde{t}}_1^{}$ and ${\tilde{t}}_2^{}$ pair production, assuming $m_{{\tilde{t}}_2^{}}=500$ GeV, $m_{{\tilde{t}}_1^{}}=300$ GeV, $m_{{\tilde{\mathit{\chi }}}_1^0}=120$ GeV and a branching ratio of 100 % for ${\tilde{t}}_2^{}\to h{\tilde{t}}_1^{}$ are also shown added to the stack (red histograms, in dark red the contribution from direct ${\tilde{t}}_1^{}$ pair production). The bottom panel displays the ratio of the data to the total background prediction. The hashed area represents the statistical and systematics uncertainty on the background