Analytic structure of nonperturbative quark propagators and meson processes (CROSBI ID 633545)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kekez, Dalibor ; Klabučar, Dubravko
engleski
Analytic structure of nonperturbative quark propagators and meson processes
The analytic structure of certain Ansatze for quark propagators in the nonperturbative regime of QCD is investigated. When choosing physically motivated parameterization of the momentum-dependent dressed quark mass function M(p2), with definite analytic structure, it is highly nontrivial to predict and control the analytic structure of the corresponding nonperturbative quark propagator. The issue of the Wick rotation relating the Minkowski-space and Euclidean-space formulations is also highly nontrivial in the nonperturbative case. A propagator form allowing the Wick rotation and enabling equivalent calculations in Minkowski and Euclidean spaces is achieved. In spite of its simplicity, this model yields good qualitative and semi-quantitative description of some pseudoscalar meson processes.
analytic; propagator; quark; QCD
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Podaci o prilogu
16-19.
2015.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of Mini-Workshop Bled 2015: Exploring Hadron Resonances, Bled Workshops Phys. 16 (2015) no.1
Golli, B. ; Rosina, M. ; Širca, S.
Ljubljana: DMFA - Založništvo
1580-4992
Podaci o skupu
Mini-Workshop Bled 2015: Exploring Hadron Resonances
ostalo
05.07.2015-11.07.2015
Bled, Slovenija