Non-perturbative gluons in diffractive photo-production of J/Ψ

Autor:	M.B Gay Ducati, Werner K Sauter
Rok vydání:	2001
Předmět:	Physics Particle physics Nuclear and High Energy Physics Infrared Momentum transfer Propagator FOS: Physical sciences Gamma gamma Gluon Cross section (physics) High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Production (computer science) Non-perturbative
Zdroj:	Physics Letters B. 521(3-4):259-266
ISSN:	0370-2693
DOI:	10.1016/s0370-2693(01)01230-8
Popis:	The modifications induced in the calculation of the cross section of the diffractive process gamma gamma -> J/Psi J/Psi when the gluon propagator is changed are analyzed. Instead of the usual perturbative gluon propagator, alternative forms obtained using non-perturbative methods like Dyson-Schwinger equations are used to consider in a more consistent way the contributions of the infrared region. The result shows a reduction in the differential cross-section for low momentum transfer once compared with the perturbative result, to be confirmed with future experimental results from TESLA. 17 pages, 5 figures, RevTex, Accepted for publication in Phys. Lett. B
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5bbc139d1bdb6665ed5ca23ae646230 Zobrazit plný text záznamu Full Text from ScienceDirect