An embedding technique to determine ττ backgrounds in proton-proton collision data

CMS Collaboration

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


An embedding technique is presented to estimate standard model it backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed nn events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at √s = 13 TeV corresponding to an integrated luminosity o 41.5 fb-1.

Original languageEnglish (US)
Article numberP06032
JournalJournal of Instrumentation
Issue number6
StatePublished - Jun 21 2019

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Mathematical Physics


  • Pattern recognition, cluster finding, calibration and fitting methods
  • Performance of high energy physics detectors


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