Naslov
Analytic structure of nonperturbative quark propagators and meson processes

Autori
Kekez, Dalibor ; Klabučar, Dubravko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
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, 2015, 16-19

Skup
Mini-Workshop Bled 2015: Exploring Hadron Resonances

Mjesto i datum
Bled, Slovenija, 05.07.2015. - 11.07.2015

Vrsta sudjelovanja
Plenarno

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
analytic; propagator; quark; QCD

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA