Hybrid k T -factorization and impact factors at NLO
Abstract In the hybrid k T -factorization formula, one initial-state parton momentum is space-like and carries non-vanishing transverse components, while the other is on-shell. We promote this factorization formula to next-to-leading order. Studying the partonic cross section, we identify all soft a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-11-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP11(2022)103 |
| _version_ | 1797865715711082496 |
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| author | Andreas van Hameren Leszek Motyka Grzegorz Ziarko |
| author_facet | Andreas van Hameren Leszek Motyka Grzegorz Ziarko |
| author_sort | Andreas van Hameren |
| collection | DOAJ |
| description | Abstract In the hybrid k T -factorization formula, one initial-state parton momentum is space-like and carries non-vanishing transverse components, while the other is on-shell. We promote this factorization formula to next-to-leading order. Studying the partonic cross section, we identify all soft and collinear divergencies in the real and virtual contribution, and recognize that all non-cancelling ones can be attributed to PDF evolution, evolution kernel, and target impact factors. In result, we construct a framework that may be used to compute NLO impact factors in general. In particular, we recover known expressions for inclusive NLO quark-and gluon impact factor corrections. |
| first_indexed | 2024-04-09T23:12:37Z |
| format | Article |
| id | doaj.art-04cadcce5a3543cb9966be21e795a051 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T23:12:37Z |
| publishDate | 2022-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-04cadcce5a3543cb9966be21e795a0512023-03-22T10:14:46ZengSpringerOpenJournal of High Energy Physics1029-84792022-11-0120221115510.1007/JHEP11(2022)103Hybrid k T -factorization and impact factors at NLOAndreas van Hameren0Leszek Motyka1Grzegorz Ziarko2Institute of Nuclear Physics Polish Academy of SciencesInstitute of Theoretical Physics, Jagiellonian UniversityInstitute of Nuclear Physics Polish Academy of SciencesAbstract In the hybrid k T -factorization formula, one initial-state parton momentum is space-like and carries non-vanishing transverse components, while the other is on-shell. We promote this factorization formula to next-to-leading order. Studying the partonic cross section, we identify all soft and collinear divergencies in the real and virtual contribution, and recognize that all non-cancelling ones can be attributed to PDF evolution, evolution kernel, and target impact factors. In result, we construct a framework that may be used to compute NLO impact factors in general. In particular, we recover known expressions for inclusive NLO quark-and gluon impact factor corrections.https://doi.org/10.1007/JHEP11(2022)103Deep Inelastic Scattering or Small-x PhysicsFactorizationRenormalization GroupHigher-Order Perturbative Calculations |
| spellingShingle | Andreas van Hameren Leszek Motyka Grzegorz Ziarko Hybrid k T -factorization and impact factors at NLO Journal of High Energy Physics Deep Inelastic Scattering or Small-x Physics Factorization Renormalization Group Higher-Order Perturbative Calculations |
| title | Hybrid k T -factorization and impact factors at NLO |
| title_full | Hybrid k T -factorization and impact factors at NLO |
| title_fullStr | Hybrid k T -factorization and impact factors at NLO |
| title_full_unstemmed | Hybrid k T -factorization and impact factors at NLO |
| title_short | Hybrid k T -factorization and impact factors at NLO |
| title_sort | hybrid k t factorization and impact factors at nlo |
| topic | Deep Inelastic Scattering or Small-x Physics Factorization Renormalization Group Higher-Order Perturbative Calculations |
| url | https://doi.org/10.1007/JHEP11(2022)103 |
| work_keys_str_mv | AT andreasvanhameren hybridktfactorizationandimpactfactorsatnlo AT leszekmotyka hybridktfactorizationandimpactfactorsatnlo AT grzegorzziarko hybridktfactorizationandimpactfactorsatnlo |