Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 52: Higgs-Zerfälle in Fermionen II

T 52.6: Talk

Wednesday, March 27, 2019, 17:15–17:30, H04

An embedding technique to determine genuine ττ backgrounds from CMS data — Janek Bechtel, •Sebastian Brommer, Artur Gottmann, Guenter Quast, and Roger Wolf — Karlsruhe Institute of Technology, Karlsruhe, Germany

The τ-embedding technique is a data-driven method, where µµ events are selected from data, and the muons are replaced by simulated τ decays. In this way a hybrid event is created, which only relies on the simulation for the well understood τ decay. The remainder of the event, by construction, provides a better description of the data than full simulation, especially for challenging simulation tasks, such as the underlying event or multijet production.

The τ-embedding technique is actively used by CMS to estimate standard model backgrounds that contain genuine τ decays.

The current status, recent developments and improvements of the technique are presented.