Identifying boosted objects with N-subjettiness
We introduce a new jet shape—N-subjettiness—designed to identify boosted hadronically-decaying objects like electroweak bosons and top quarks. Combined with a jet invariant mass cut, N-subjettiness is an effective discriminating variable for tagging boosted objects and rejecting the background of...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2012
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| Online Access: | http://hdl.handle.net/1721.1/72041 https://orcid.org/0000-0002-2406-8160 |
| _version_ | 1811096546582724608 |
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| author | Thaler, Jesse Van Tilburg, Ken |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Thaler, Jesse Van Tilburg, Ken |
| author_sort | Thaler, Jesse |
| collection | MIT |
| description | We introduce a new jet shape—N-subjettiness—designed to identify boosted
hadronically-decaying objects like electroweak bosons and top quarks. Combined with a
jet invariant mass cut, N-subjettiness is an effective discriminating variable for tagging
boosted objects and rejecting the background of QCD jets with large invariant mass. In
efficiency studies of boosted W bosons and top quarks, we find tagging efficiencies of 30%
are achievable with fake rates of 1%. We also consider the discovery potential for new
heavy resonances that decay to pairs of boosted objects, and find significant improvements
are possible using N-subjettiness. In this way, N-subjettiness combines the advantages of
jet shapes with the discriminating power seen in previous jet substructure algorithms. |
| first_indexed | 2024-09-23T16:45:24Z |
| format | Article |
| id | mit-1721.1/72041 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:45:24Z |
| publishDate | 2012 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/720412022-09-29T21:16:38Z Identifying boosted objects with N-subjettiness Thaler, Jesse Van Tilburg, Ken Massachusetts Institute of Technology. Center for Theoretical Physics Thaler, Jesse Thaler, Jesse Van Tilburg, Ken We introduce a new jet shape—N-subjettiness—designed to identify boosted hadronically-decaying objects like electroweak bosons and top quarks. Combined with a jet invariant mass cut, N-subjettiness is an effective discriminating variable for tagging boosted objects and rejecting the background of QCD jets with large invariant mass. In efficiency studies of boosted W bosons and top quarks, we find tagging efficiencies of 30% are achievable with fake rates of 1%. We also consider the discovery potential for new heavy resonances that decay to pairs of boosted objects, and find significant improvements are possible using N-subjettiness. In this way, N-subjettiness combines the advantages of jet shapes with the discriminating power seen in previous jet substructure algorithms. United States. Dept. of Energy (cooperative research agreement DE-FG02-05ER41360) 2012-08-08T18:55:25Z 2012-08-08T18:55:25Z 2011-03 2011-01 Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/72041 Thaler, Jesse, and Ken Tilburg. “Identifying boosted objects with N-subjettiness.” Journal of High Energy Physics 2011.3 (2011). https://orcid.org/0000-0002-2406-8160 en_US http://dx.doi.org/10.1007/jhep03(2011)015 Journal of High Energy Physics Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Springer-Verlag Prof. Thaler via Mat Willmott |
| spellingShingle | Thaler, Jesse Van Tilburg, Ken Identifying boosted objects with N-subjettiness |
| title | Identifying boosted objects with N-subjettiness |
| title_full | Identifying boosted objects with N-subjettiness |
| title_fullStr | Identifying boosted objects with N-subjettiness |
| title_full_unstemmed | Identifying boosted objects with N-subjettiness |
| title_short | Identifying boosted objects with N-subjettiness |
| title_sort | identifying boosted objects with n subjettiness |
| url | http://hdl.handle.net/1721.1/72041 https://orcid.org/0000-0002-2406-8160 |
| work_keys_str_mv | AT thalerjesse identifyingboostedobjectswithnsubjettiness AT vantilburgken identifyingboostedobjectswithnsubjettiness |