====== Dilepton mass spectrum interference: beyond the bump-hunt =======

// Members: Andy B, **Tetiana H**, David Y, Bill M, Richard R, Yang Bai, Louie C //

The rivet and contur implementation of this is discussed on [[2019:tools:searchmeas:rivetsearchescontur|this page]].

Idea is to investigate whether interference "dips" in mll can be used to enhance limits above bump hunting, using the Rivet implementation of the ATLAS 13 TeV mll spectrum + resolution smearing.

Study dependence on resonance/interference width, play-off against measurement systematics, and propose recommendations on experimental data reporting to allow interference-aware interpretations in future.

Tasks:
  * Richard & Yang: discuss models interesting for interference features
  * Andy: implement fit-function normalisation, and re-fit to find correlations
  * ALL: try model via MG5 with SM Drell-Yan interference; stats in Contur or standalone; ignore systematics (other than resolution smearing) for now