Speaker
Description
The search for W$^\prime \to tb $ decays in the hadronic final states using the full run 2 data, which was collected by the ATLAS detector at the Large Hadron Collider (LHC), is on going. Reconstruction of the top-quark is one of the crucial steps in this search. To conduct the study of improving the top-quark reconstruction, two signal samples, which had 2 and 3.5 TeV W$^\prime$ masses were studied. These signal samples enabled us to study methods that are used to choose the large-Radius jet (large-R jet) to be our top-quark candidate in the detector level, then compare it to the same large-R jet of the top-quark in the particle level if they match. This helps us to better estimate the top-quark selection efficiency in this search. There are two methods of choosing the large-R jet top-quark candidate that were studied. These methods both yielded approximately 82 \% match to the large-R jet of the top-quark in the particle level.