An embedding technique to determine ττ backgrounds in proton-proton collision data
© 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 background...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021
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| Online Access: | https://hdl.handle.net/1721.1/133714 |
| _version_ | 1811097317658329088 |
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| author | The CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics The CMS Collaboration |
| author_sort | The CMS Collaboration |
| collection | MIT |
| description | © 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. |
| first_indexed | 2024-09-23T16:57:44Z |
| format | Article |
| id | mit-1721.1/133714 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:57:44Z |
| publishDate | 2021 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1337142023-01-06T20:11:17Z An embedding technique to determine ττ backgrounds in proton-proton collision data The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science © 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. 2021-10-27T19:56:19Z 2021-10-27T19:56:19Z 2019 2021-03-29T16:27:17Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133714 en 10.1088/1748-0221/14/06/P06032 Journal of Instrumentation Creative Commons Attribution 3.0 unported license https://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | The CMS Collaboration An embedding technique to determine ττ backgrounds in proton-proton collision data |
| title | An embedding technique to determine ττ backgrounds in proton-proton collision data |
| title_full | An embedding technique to determine ττ backgrounds in proton-proton collision data |
| title_fullStr | An embedding technique to determine ττ backgrounds in proton-proton collision data |
| title_full_unstemmed | An embedding technique to determine ττ backgrounds in proton-proton collision data |
| title_short | An embedding technique to determine ττ backgrounds in proton-proton collision data |
| title_sort | embedding technique to determine ττ backgrounds in proton proton collision data |
| url | https://hdl.handle.net/1721.1/133714 |
| work_keys_str_mv | AT thecmscollaboration anembeddingtechniquetodeterminettbackgroundsinprotonprotoncollisiondata AT thecmscollaboration embeddingtechniquetodeterminettbackgroundsinprotonprotoncollisiondata |