Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV
© 2020 Elsevier B.V. A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector at the LHC. For events with at least one obse...
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| Format: | Article |
| Language: | English |
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Elsevier BV
2021
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| Online Access: | https://hdl.handle.net/1721.1/133684 |
| _version_ | 1811069597983440896 |
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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 | © 2020 Elsevier B.V. A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y|<1 are contained in jets with pseudorapidity |ηjet|<1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics. |
| first_indexed | 2024-09-23T08:12:54Z |
| format | Article |
| id | mit-1721.1/133684 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:12:54Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1336842023-01-05T20:09:40Z Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science © 2020 Elsevier B.V. A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y|<1 are contained in jets with pseudorapidity |ηjet|<1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics. 2021-10-27T19:54:08Z 2021-10-27T19:54:08Z 2020 2020-11-20T16:06:16Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133684 en 10.1016/J.PHYSLETB.2020.135409 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier BV Elsevier |
| spellingShingle | The CMS Collaboration Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV |
| title | Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV |
| title_full | Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV |
| title_fullStr | Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV |
| title_full_unstemmed | Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV |
| title_short | Study of J / ψ meson production inside jets in pp collisions at √ s = 8 TeV |
| title_sort | study of j ψ meson production inside jets in pp collisions at √ s 8 tev |
| url | https://hdl.handle.net/1721.1/133684 |
| work_keys_str_mv | AT thecmscollaboration studyofjpsmesonproductioninsidejetsinppcollisionsats8tev |