Anisotropic jet broadening and jet shape
Abstract In this paper, we explore the use of jet substructure as a way of probing phenomena which break the isotropic behavior of jets, such as jet propagation through an anisotropically flowing quark-gluon plasma or spin correlations. We introduce two novel observables for this purpose: the azimut...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-07-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP07(2025)097 |
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| author | Weiyao Ke John Terry Ivan Vitev |
| author_facet | Weiyao Ke John Terry Ivan Vitev |
| author_sort | Weiyao Ke |
| collection | DOAJ |
| description | Abstract In this paper, we explore the use of jet substructure as a way of probing phenomena which break the isotropic behavior of jets, such as jet propagation through an anisotropically flowing quark-gluon plasma or spin correlations. We introduce two novel observables for this purpose: the azimuthal-dependent jet broadening and the azimuthal-dependent jet shape, which generalize the traditional isotropic substructure studies. Using Soft-Collinear Effective Theory, we explicitly calculate the jet functions associated with these observables with a standard jet axis and with a Winner-Take-All jet axis in both the resummed and fixed order limits. While our analysis first and foremost establishes the formalism for the azimuthal-dependent jet substructure, it also brings to light new results for jet substructure in the azimuthally integrated case, such as the semi-inclusive jet function and the exclusive jet shape for the Winner-Take-All axis, and the jet broadening in the fixed order region. As an illustrative example for the new formalism we demonstrate that the azimuthal-dependent jet broadening can be used as a direct probe of the transversity parton distribution function in deep inelastic scattering. |
| format | Article |
| id | doaj-art-4e060c7606d34b4187f0c79ae11ac8fb |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-4e060c7606d34b4187f0c79ae11ac8fb2025-08-20T03:42:19ZengSpringerOpenJournal of High Energy Physics1029-84792025-07-012025715810.1007/JHEP07(2025)097Anisotropic jet broadening and jet shapeWeiyao Ke0John Terry1Ivan Vitev2Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal UniversityTheoretical Division, Los Alamos National LaboratoryTheoretical Division, Los Alamos National LaboratoryAbstract In this paper, we explore the use of jet substructure as a way of probing phenomena which break the isotropic behavior of jets, such as jet propagation through an anisotropically flowing quark-gluon plasma or spin correlations. We introduce two novel observables for this purpose: the azimuthal-dependent jet broadening and the azimuthal-dependent jet shape, which generalize the traditional isotropic substructure studies. Using Soft-Collinear Effective Theory, we explicitly calculate the jet functions associated with these observables with a standard jet axis and with a Winner-Take-All jet axis in both the resummed and fixed order limits. While our analysis first and foremost establishes the formalism for the azimuthal-dependent jet substructure, it also brings to light new results for jet substructure in the azimuthally integrated case, such as the semi-inclusive jet function and the exclusive jet shape for the Winner-Take-All axis, and the jet broadening in the fixed order region. As an illustrative example for the new formalism we demonstrate that the azimuthal-dependent jet broadening can be used as a direct probe of the transversity parton distribution function in deep inelastic scattering.https://doi.org/10.1007/JHEP07(2025)097Jets and Jet SubstructureEffective Field Theories of QCDFactorizationRenormalization Group |
| spellingShingle | Weiyao Ke John Terry Ivan Vitev Anisotropic jet broadening and jet shape Journal of High Energy Physics Jets and Jet Substructure Effective Field Theories of QCD Factorization Renormalization Group |
| title | Anisotropic jet broadening and jet shape |
| title_full | Anisotropic jet broadening and jet shape |
| title_fullStr | Anisotropic jet broadening and jet shape |
| title_full_unstemmed | Anisotropic jet broadening and jet shape |
| title_short | Anisotropic jet broadening and jet shape |
| title_sort | anisotropic jet broadening and jet shape |
| topic | Jets and Jet Substructure Effective Field Theories of QCD Factorization Renormalization Group |
| url | https://doi.org/10.1007/JHEP07(2025)097 |
| work_keys_str_mv | AT weiyaoke anisotropicjetbroadeningandjetshape AT johnterry anisotropicjetbroadeningandjetshape AT ivanvitev anisotropicjetbroadeningandjetshape |