Recursive Soft Drop
We introduce a new jet substructure technique called Recursive Soft Drop, which generalizes the Soft Drop algorithm to have multiple grooming layers. Like the original Soft Drop method, this new recursive variant traverses a jet clustering tree to remove soft wide-angle contamination. By enforcing t...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Berlin Heidelberg
2018
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| Online Access: | http://hdl.handle.net/1721.1/116608 https://orcid.org/0000-0002-2406-8160 |
| _version_ | 1826200471478468608 |
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| author | Necib, Lina Soyez, Gregory Dreyer, Frederic Thaler, Jesse |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Necib, Lina Soyez, Gregory Dreyer, Frederic Thaler, Jesse |
| author_sort | Necib, Lina |
| collection | MIT |
| description | We introduce a new jet substructure technique called Recursive Soft Drop, which generalizes the Soft Drop algorithm to have multiple grooming layers. Like the original Soft Drop method, this new recursive variant traverses a jet clustering tree to remove soft wide-angle contamination. By enforcing the Soft Drop condition N times, Recursive Soft Drop improves the jet mass resolution for boosted hadronic objects like W bosons, top quarks, and Higgs bosons. We further show that this improvement in mass resolution persists when including the effects of pileup, up to large pileup multiplicities. In the limit that N goes to infinity, the resulting groomed jets formally have zero catchment area. As an alternative approach, we present a bottom-up version of Recursive Soft Drop which, in its local form, is similar to Recursive Soft Drop and which, in its global form, can be used to perform event-wide grooming. |
| first_indexed | 2024-09-23T11:37:00Z |
| format | Article |
| id | mit-1721.1/116608 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:37:00Z |
| publishDate | 2018 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1166082022-09-27T20:47:38Z Recursive Soft Drop Necib, Lina Soyez, Gregory Dreyer, Frederic Thaler, Jesse Massachusetts Institute of Technology. Department of Physics Dreyer, Frederic Thaler, Jesse We introduce a new jet substructure technique called Recursive Soft Drop, which generalizes the Soft Drop algorithm to have multiple grooming layers. Like the original Soft Drop method, this new recursive variant traverses a jet clustering tree to remove soft wide-angle contamination. By enforcing the Soft Drop condition N times, Recursive Soft Drop improves the jet mass resolution for boosted hadronic objects like W bosons, top quarks, and Higgs bosons. We further show that this improvement in mass resolution persists when including the effects of pileup, up to large pileup multiplicities. In the limit that N goes to infinity, the resulting groomed jets formally have zero catchment area. As an alternative approach, we present a bottom-up version of Recursive Soft Drop which, in its local form, is similar to Recursive Soft Drop and which, in its global form, can be used to perform event-wide grooming. Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Grant P2SKP2-165039) United States. Department of Energy. Office of High Energy and Nuclear Physics (Grant DE-SC0012567) 2018-06-26T14:17:57Z 2018-06-26T14:17:57Z 2018-06 2018-04 2018-06-22T03:56:06Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/116608 Dreyer, Frédéric A., et al. “Recursive Soft Drop.” Journal of High Energy Physics, vol. 2018, no. 6, June 2018. https://orcid.org/0000-0002-2406-8160 en https://doi.org/10.1007/JHEP06(2018)093 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Necib, Lina Soyez, Gregory Dreyer, Frederic Thaler, Jesse Recursive Soft Drop |
| title | Recursive Soft Drop |
| title_full | Recursive Soft Drop |
| title_fullStr | Recursive Soft Drop |
| title_full_unstemmed | Recursive Soft Drop |
| title_short | Recursive Soft Drop |
| title_sort | recursive soft drop |
| url | http://hdl.handle.net/1721.1/116608 https://orcid.org/0000-0002-2406-8160 |
| work_keys_str_mv | AT neciblina recursivesoftdrop AT soyezgregory recursivesoftdrop AT dreyerfrederic recursivesoftdrop AT thalerjesse recursivesoftdrop |