Fig. 1: Distributions of the combined NN output in control regions and validation regions.
From: Search for charged-lepton-flavour violation in Z-boson decays with the ATLAS detector
a,b, CRZττ for the μτ channel with 1P (a) and 3P (b) τhad-vis candidates. c,d, Same-sign validation region (VRSS) for the eτ channel for events with 1P (c) and 3P (d) τhad-vis candidates. The expected contributions are determined in a fit to data (‘Constraints on\({\mathcal{B}}(Z\to \ell \tau)\)’). The panels below each plot show the ratios of the observed yields to the best-fit background yields. The hatched error bands represent a one standard deviation of the combined statistical and systematic uncertainties. The statistical uncertainties on the data are shown as vertical bars. The last bin in each plot includes overflow events. Similarly good agreement is observed in the same-sign validation region for the μτ channel and CRZττ for the eτ channel, which are not shown here.
