Table 1.

Average number of selected candidates per event (efficiency) in % for the main stages of the offline selection for simulated $H^0\to {\mathit{\pi }}_v{\mathit{\pi }}_v$ events with ${\mathit{\pi }}_v\to b\overline{b}$, $m_{H^0}=120\mathrm{GeV}/{\mathrm{c}}^2$, $m_{{\mathit{\pi }}_v}=35\mathrm{GeV}/{\mathrm{c}}^2$ and ${\mathit{\tau }}_{{\mathit{\pi }}_v}=10\mathrm{ps}$. The pre-selection consists of the acceptance, trigger and offline vertex reconstruction. It represents the first stage in which the candidate yield on the total data sample, shown in the right column, can be counted. The reported uncertainty on the efficiency is only the statistical uncertainty from the finite sample size

Selection step	Signal efficiency	Yield in data
Pre-selection	2.125 $\pm$ 0.018	2,555,377
Jet reconstruction	1.207 $\pm$ 0.014	117,054
$m/m_{\text{corr}}$ and $\mathrm{\Delta }R$	0.873 $\pm$ 0.012	58,163
Trigger on candidate	0.778 $\pm$ 0.012	29,921