Pure quark and gluon observables in collinear drop
Abstract We construct a class of pure quark and gluon observables by using the collinear drop grooming technique. The construction is based on linear combinations of multiple cumulative distributions of the jet mass in collinear drop, whose specific weights are...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Berlin Heidelberg
2022
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| Online Access: | https://hdl.handle.net/1721.1/145478 |
| _version_ | 1826205782083895296 |
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| author | Stewart, Iain W. Yao, Xiaojun |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Stewart, Iain W. Yao, Xiaojun |
| author_sort | Stewart, Iain W. |
| collection | MIT |
| description | Abstract
We construct a class of pure quark and gluon observables by using the collinear drop grooming technique. The construction is based on linear combinations of multiple cumulative distributions of the jet mass in collinear drop, whose specific weights are fully predicted perturbatively. This yields observables which obtain their values purely from quarks (or purely from gluons) in a wide region of phase space. We demonstrate this by showing that these observables are effective in two phase space regions, one dominated by perturbative resummation and one dominated by nonperturbative effects. The nonperturbative effects are included using shape functions which only appear as a common factor in the linear combinations constructed. We test this construction using a numerical analysis with next-to-leading logarithmic resummation and various shape function models, as well as analyzing these observables with Pythia and Vincia. Choices for the collinear drop parameters are optimized for experimental use. |
| first_indexed | 2024-09-23T13:19:01Z |
| format | Article |
| id | mit-1721.1/145478 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:19:01Z |
| publishDate | 2022 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1454782022-10-01T14:28:45Z Pure quark and gluon observables in collinear drop Stewart, Iain W. Yao, Xiaojun Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Center for Theoretical Physics Abstract We construct a class of pure quark and gluon observables by using the collinear drop grooming technique. The construction is based on linear combinations of multiple cumulative distributions of the jet mass in collinear drop, whose specific weights are fully predicted perturbatively. This yields observables which obtain their values purely from quarks (or purely from gluons) in a wide region of phase space. We demonstrate this by showing that these observables are effective in two phase space regions, one dominated by perturbative resummation and one dominated by nonperturbative effects. The nonperturbative effects are included using shape functions which only appear as a common factor in the linear combinations constructed. We test this construction using a numerical analysis with next-to-leading logarithmic resummation and various shape function models, as well as analyzing these observables with Pythia and Vincia. Choices for the collinear drop parameters are optimized for experimental use. 2022-09-19T13:54:39Z 2022-09-19T13:54:39Z 2022-09-15 2022-09-18T03:13:23Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/145478 Journal of High Energy Physics. 2022 Sep 15;2022(9):120 PUBLISHER_CC en https://doi.org/10.1007/JHEP09(2022)120 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Stewart, Iain W. Yao, Xiaojun Pure quark and gluon observables in collinear drop |
| title | Pure quark and gluon observables in collinear drop |
| title_full | Pure quark and gluon observables in collinear drop |
| title_fullStr | Pure quark and gluon observables in collinear drop |
| title_full_unstemmed | Pure quark and gluon observables in collinear drop |
| title_short | Pure quark and gluon observables in collinear drop |
| title_sort | pure quark and gluon observables in collinear drop |
| url | https://hdl.handle.net/1721.1/145478 |
| work_keys_str_mv | AT stewartiainw purequarkandgluonobservablesincollineardrop AT yaoxiaojun purequarkandgluonobservablesincollineardrop |