 | The \gstrip\ distribution in the FAIL (left) and PASS (right) regions for events passing the event selection and with $\pt > 200\GeV$. The data are represented by black dots. The background predicted by the ionization method is shown in yellow, with the hatched area indicating the background uncertainty. As examples, the blue line shows the 1800\GeV \PSg signal distribution and the red line shows the 557\GeV \stau signal distribution. The lower panel displays the pulls, defined as the difference between the data and the estimated background, divided by the associated uncertainty. |