RECAST Introduction

RECAST is a framework for re-using existing analyses prepared within ATLAS for subsequent publications by reinterpreting the analysis with respect to new models of physics. The approach exploits the fact that the Standard Model backgrounds of a search must only be estimated once. That is, for a reinterpretation one only needs to:

• Estimate the contribution of the new BSM model in the phase space regions analyzed by the experiment by re-executing the event selection code on the derivation samples produced for the new signal.
• Re-execute the statistical analysis in order to determine whether the model is ruled out or not (e.g. by calculating a CLs value).

Analysis Preservation using Containerized Workflows

To achieve this re-usability of analyses, it is important to archive the analysis in a way that enables us to re-run it without bothering the original analysis team too much long after the analysis team is finished.

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Last update: June 5, 2019