Integral representations for nonperturbative generalized parton distributions in terms of perturbative diagrams

Autor:	P. V. Pobylitsa
Rok vydání:	2003
Předmět:	Physics Nuclear and High Energy Physics Particle physics Integral representation Spectral representation Propagator Parton Perturbation theory (quantum mechanics) Representation (mathematics) D-term Mathematical physics
Zdroj:	Physical Review D. 67
ISSN:	1089-4918 0556-2821
DOI:	10.1103/physrevd.67.094012
Popis:	An integral representation is suggested for generalized parton distributions which automatically satisfies the polynomiality and positivity constraints. This representation has the form of an integral of perturbative triangle diagrams over the masses of three propagators with an appropriate weight depending on these masses. An arbitrary D term can be added.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b581ad0adc13a91f25cd3dce448fdbf4 https://doi.org/10.1103/physrevd.67.094012 Zobrazit plný text záznamu