An embedding technique to determine ττ backgrounds in proton-proton collision data
Name
Sirunyan_2019_J._Inst._14_P06032.pdf
Description
Published version
Size
6.14 MB
Format
Adobe PDF
Checksum (MD5)
e56afa4a72729855eceda36ef4f14776
Author(s)
The CMS Collaboration
Date Issued
2019
Journal
Journal of Instrumentation
Publisher
IOP Publishing
Version
Final published version
Abstract
© 2019 CERN for the benefit of the CMS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1748-0221/14/06/P06032
