CERN Accelerating science

Distributions of the mass reconstructed by the Missing Mass Calculator, $\Mmutau$, in \Ztaumu{} SR1 (left) and SR2 (right). The background distributions are determined in a global fit. The signal distributions are scaled to a branching ratio of Br($Z\to\mu\tau$) = $10^{-3}$ to make them visible. The bottom panel of each subfigure shows the ratio of the observed data to the estimated background. The hatched band for the ratio illustrates post-fit systematic uncertainties in the background prediction. The statistical uncertainties for data and background predictions are added in quadrature for the ratios. The last bin of the distribution contains events with $\Mmutau>200$ \GeV{}.

Distributions of the mass reconstructed by the Missing Mass Calculator, $\Mmutau$, in \Ztaumu{} SR1 (left) and SR2 (right). The background distributions are determined in a global fit. The signal distributions are scaled to a branching ratio of Br($Z\to\mu\tau$) = $10^{-3}$ to make them visible. The bottom panel of each subfigure shows the ratio of the observed data to the estimated background. The hatched band for the ratio illustrates post-fit systematic uncertainties in the background prediction. The statistical uncertainties for data and background predictions are added in quadrature for the ratios. The last bin of the distribution contains events with $\Mmutau>200$ \GeV{}.