The model for effective QCD Hamiltonian, describing bound states of “constituent” quark and antiquark, is proposed, using the Light Front (LF) formulation of QCD in the LF gauge. Zero mode of gluon field becomes independent canonical variable in this model unlike the known canonical formulations on the LF. This mode forms the “string” between quark and antiquark and bounds them. As quark and antiquark are separated by the “string”, the interaction term, related to the interaction of fermion currents in the Hamiltonian, gives zero due to locality of this interaction. We introduce the nonlocal modification of this term and investigate the resulting spectral equation for mass squared. This equation is solved analytically in the large quark mass limit. However the rotation invariance turns out to be violated with our choice of modified interaction term. We show the way to restore the invariance and discuss the possibility to obtain the spectrum describing the experimental one.
Язык оригиналаанглийский
Название основной публикацииHadron Spectroscopy and Structure
Подзаголовок основной публикацииThe 18th International Conference on Hadron Spectroscopy and Structure (HADRON2019), Guilin, China, 16 – 21 August 2019
Страницы632-637
ISBN (электронное издание)978-981-121-932-0
DOI
СостояниеОпубликовано - 2020
СобытиеHADRON2019 - Guilin, Китай
Продолжительность: 16 авг 201921 авг 2019

конференция

конференцияHADRON2019
Сокращенное названиеHADRON2019
Страна/TерриторияКитай
ГородGuilin
Период16/08/1921/08/19

    Предметные области Scopus

  • Физика и астрономия (все)

    Области исследований

  • квантование на световом фронте, калибровочная теория поля, кварк-антикварковая модель

ID: 71131645