Gauge technique approximation to the pi gamma production and the pion transition form factor

0531559 - ÚJF 2021 RIV US eng J - Článek v odborném periodiku
Šauli, Vladimír
Gauge technique approximation to the pi gamma production and the pion transition form factor.
Physical Review D. Roč. 102, č. 1 (2020), č. článku 014049. ISSN 2470-0010. E-ISSN 2470-0029
Institucionální podpora: RVO:61389005
Klíčová slova: pion transition * low energy QCD
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 5.296, rok: 2020
Způsob publikování: Open access
https://doi.org/10.1103/PhysRevD.102.014049

The pion transition form factor G(q(2)) is computed on the entire domain of spacelike and timelike momenta using a quantum field theory continuum approach. in an analytical continuation of the function G(Q(2)) we utilized the gauge technique with the quark propagator determined from Minkowski space solution of QCD Dyson-Schwinger equations. The scale is set up by the phenomena of dynamical chiral symmetry breaking, which is a striking feature of low energy QCD.
Trvalý link: http://hdl.handle.net/11104/0310189