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Analytic structure of nonperturbative quark propagators and meson processes (CROSBI ID 633545)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Kekez, Dalibor ; Klabučar, Dubravko Analytic structure of nonperturbative quark propagators and meson processes // Proceedings of Mini-Workshop Bled 2015: Exploring Hadron Resonances, Bled Workshops Phys. 16 (2015) no.1 / Golli, B. ; Rosina, M. ; Širca, S. (ur.). Ljubljana: DMFA - Založništvo, 2015. str. 16-19

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

Povezanost rada

Fizika

Poveznice