Recursive Soft Drop
Abstract 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 en...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP06(2018)093 |
| _version_ | 1818311851057872896 |
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| author | Frédéric A. Dreyer Lina Necib Gregory Soyez Jesse Thaler |
| author_facet | Frédéric A. Dreyer Lina Necib Gregory Soyez Jesse Thaler |
| author_sort | Frédéric A. Dreyer |
| collection | DOAJ |
| description | Abstract 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 | 2024-12-13T08:08:31Z |
| format | Article |
| id | doaj.art-3e058456be67454d96d1b0e8d22a6668 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-13T08:08:31Z |
| publishDate | 2018-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-3e058456be67454d96d1b0e8d22a66682022-12-21T23:54:16ZengSpringerOpenJournal of High Energy Physics1029-84792018-06-012018613410.1007/JHEP06(2018)093Recursive Soft DropFrédéric A. Dreyer0Lina Necib1Gregory Soyez2Jesse Thaler3Center for Theoretical Physics, Massachusetts Institute of TechnologyWalter Burke Institute for Theoretical Physics, California Institute of TechnologyIPhT, CEA Saclay, CNRS UMR 3681Center for Theoretical Physics, Massachusetts Institute of TechnologyAbstract 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.http://link.springer.com/article/10.1007/JHEP06(2018)093JetsQCD Phenomenology |
| spellingShingle | Frédéric A. Dreyer Lina Necib Gregory Soyez Jesse Thaler Recursive Soft Drop Journal of High Energy Physics Jets QCD Phenomenology |
| 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 |
| topic | Jets QCD Phenomenology |
| url | http://link.springer.com/article/10.1007/JHEP06(2018)093 |
| work_keys_str_mv | AT fredericadreyer recursivesoftdrop AT linanecib recursivesoftdrop AT gregorysoyez recursivesoftdrop AT jessethaler recursivesoftdrop |