Data-driven background estimations in H+ analyses in ATLAS

Included are proceedings for the Charged 2014 Conference at Uppsala University, for a contributed talk describing the major data-driven background estimation techniques used in $H^{+} \rightarrow \tau \nu$ searches conducted on collisions produced by the LHC and recorded by the ATLAS detector. These techniques include true $\tau_\text{had}$ embedding, the use of correction factors to estimate backgrounds with a jet misidentified as a $\tau_\text{had}$, and matrix methods used to predict contributions where jets are misidentified as a $\tau_\text{had}$ or other lepton.