Kaon distribution functions from empirical information
Using available information from Drell-Yan data on pion and kaon structure functions, an approach is described which enables the development of pointwise profiles for all pion and kaon parton distribution functions (DFs) without reference to theories of hadron structure. The key steps are constructi...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | inglés |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/28005 |
| Acceso en línea: | https://hdl.handle.net/10272/28005 |
| Access Level: | acceso abierto |
| Palabra clave: | Continuum Schwinger function methods Drell-Yan reactions Emergence of mass Meson structure functions Nambu-Goldstone bosons Parton distribution functions 2207 Física Atómica y Nuclear |
| Sumario: | Using available information from Drell-Yan data on pion and kaon structure functions, an approach is described which enables the development of pointwise profiles for all pion and kaon parton distribution functions (DFs) without reference to theories of hadron structure. The key steps are construction of structure-function-constrained probability-weighted ensembles of valence DF replicas and use of an evolution scheme for parton DFs that is allorders exact. The DFs obtained express qualitatively sound features of light-meson structure, e.g., the effects of Higgs boson couplings into QCD and the size of heavy-quark momentum fractions in light hadrons. In order to improve the results, additional and more precise data on the -quark-in-kaon, u, to -quark-in-pion, u, DF ratio would be necessary. Of greater value would be extraction of u alone, thereby avoiding inference from the ratio: currently, the data-based form of u is materially influenced by results for u. |
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