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Pseudoscalar current and covariance with the light-front approach

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Autor(es):
Leao, J. ; de Melo, J. P. B. C.
Número total de Autores: 2
Tipo de documento: Artigo Científico
Fonte: REVISTA MEXICANA DE FISICA; v. 69, n. 6, p. 14-pg., 2023-11-01.
Resumo

Quantum Field Theory (QFT) is used to describe the physics of particles in terms of their fundamental constituents. The Light-Front Field Theory (LFFT), introduced by Paul Dirac in 1949 [1], is an alternative approach to solve some of the problems that arise in quantum field theory. The LFFT is similar to the Equal Time Quantum Field Theory (EQT), however, some particularities are not, such as the loss of covariance in the light-front. Pion electromagnetic form factor is studied in this work at lower and higher momentum transfer regions to explore the constituent quark models and the differences among these and other models. The electromagnetic current is calculated with both the "plus" and "minus" components in the light-front approach. The results are compared with other models, as well as with experimental data. (AU)

Processo FAPESP: 19/02923-5 - Física hadrônica no formalismo da frente de luz
Beneficiário:Joao Pacheco Bicudo Cabral de Mello
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 17/05660-0 - Estudos teóricos da estrutura e reações de núcleos exóticos e sistemas de muitos corpos
Beneficiário:Brett Vern Carlson
Modalidade de apoio: Auxílio à Pesquisa - Temático
Processo FAPESP: 13/26258-4 - Matéria superdensa no universo
Beneficiário:Manuel Máximo Bastos Malheiro de Oliveira
Modalidade de apoio: Auxílio à Pesquisa - Temático