Publicação: QCD tests with an infrared finite gluon propagator and coupling constant
Nenhuma Miniatura disponível
Data
2010-02-01
Autores
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Carta
Direito de acesso
Acesso aberto

Resumo
Recent progress in the solution of Schwinger-Dyson equations, as well as lattice simulation of pure glue QCD, indicate that the gluon propagator and coupling constant are infrared finite. Such non-perturbative information can be introduced in the QCD perturbative expansion in the scheme named Dynamical Perturbation Theory. We exemplify this procedure with the calculation of some two-body non-leptonic annihilation B meson decays, which show agreement with the experimental data in the case of a gluon propagator characterized by a dynamical gluon mass of 500MeV, compatible with the value found in several processes computed with this method. We give a. preliminary account of the application of this procedure at the loop level in the case of the Bjorken sum rule.
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Nuclear Physics B-proceedings Supplements. Amsterdam: Elsevier B.V., v. 199, p. 178-183, 2010.