Light-front quark model consistent with Drell-Yan-West duality and quark counting rules; Physical Review D; Vol. 89, iss. 5

Light-front quark model consistent with Drell-Yan-West duality and quark counting rules; Physical Review D; Vol. 89, iss. 5

Détails bibliographiques
Parent link:Physical Review D: covering particles, fields, gravitation, and cosmology.— , 1958-
Vol. 89, iss. 5.— 2015.— [054033, 12 p.]
Autres auteurs: Gutsch Th., Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich, Nagy Miroslav, Schmidt I., Vega A.
Résumé:Title screen
From the matching of soft-wall AdS/QCD and light-front QCD for electromagnetic form factors of hadrons with arbitrary twist, we derive an effective light-front wave function (LFWF). The scale at which such matching is performed is set as an initial scale. Together with the LFWF, we also obtain expressions for parton distribution functions (PDFs) and generalized parton distributions (GPDs) at this scale. Doing the hard evolution of PDFs and GPDs, we show that these quantities obey model-independent constraints imposed, e.g., by the Drell-Yan-West duality at large x and large scales, while the hadronic form factors at large momenta are in full agreement with quark counting rules. We finally propose a phenomenological light-front wave function for hadrons with arbitrary twist dimension (mesons, baryons, and multiquark states). It explicitly depends on the scale. The wave function evolves from the expression at the initial scale predicted by soft-wall AdS/QCD to high scales, where it gives the correct scaling behavior of PDFs, GPDs, and form factors for both pions and nucleons. For other hadronic states, the proposed wave function produces form factors consistent with quark counting rules and gives predictions for parton distributions. As an application, we build a light-front quark model for nucleons based on the proposed wave function.
Режим доступа: по договору с организацией-держателем ресурса
Langue:anglais
Publié: 2015
Sujets:
электронный ресурс
труды учёных ТПУ
резонансы
комбинируемый анализ
Accès en ligne:https://doi.org/10.1103/PhysRevD.89.054033
Format: Électronique Chapitre de livre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657070

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