The pion electromagnetic structure with self-energy

8th International Workshop on Hadron Physics

Mello, Clayton Santos^1 ; Melo, J. P. B. C. De^2 ; Frederico, T.^1

Instituto Tecnológico de Aeronáutica, DCTA, São José dos Campos, SP

12.228-900, Brazil^1

Laboratório de Física Teórica e Computacional - LFTC, Universidade Cruzeiro Do sul, São Paulo, SP

01506-000, Brazil^2

关键词: Electromagnetic form factors;    Electromagnetic structure;    Form factors;    Lattice QCD;    Nonperturbative;    Quantum field theory;    Self energy;    Vertex model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/706/5/052008/pdf
DOI  :  10.1088/1742-6596/706/5/052008

来源: IOP

【 摘 要 】

We study the electromagnetic structure of the pion in terms of the quantum cromodynamic (QCD) model on the Breit-frame. We calculated the observables, such as the electromagnetic form factor. The priori to have a calculation covariant need to get the valence term of the eletromagnetic form factor. We use the usual formalism in quantum field theory (QFT) and light-front quantum field theory (LFQFT) in order to test the properties of form factor in nonperturbative QCD. In this particular case, the form factor can be obtained using the pion Light-Front (LF) wave function including self-energy from Lattice-QCD. Specifically, these calculations was performed in LF formalism. We consider a quark-antiquark vertex model having a quark self-energy. Also we can use other models to compare the pion electromagnetic form factor with different wave function and to observe the degree of agreement between them.