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Master's Dissertation
DOI
https://doi.org/10.11606/D.43.2003.tde-04062021-152550
Document
Author
Full name
Ricardo D'Elia Matheus
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2003
Supervisor
Committee
Navarra, Fernando Silveira (President)
Bracco, Mirian Enriqueta
Rosenfeld, Rogério
Title in Portuguese
O fator de forma J/'psi'-D-D em regras de soma da QCD
Keywords in Portuguese
CROMODINÂMICA QUÂNTICA
Abstract in Portuguese
Neste trabalho calculamos o fator de forma e a constante de acoplamento para o vértice J/'psi'DD nos casos em que os mesons J/'psi' ou D estão fora da camada de massa, utilizando as técnicas das Regras de Soma da QD. Nós estudamos a regra de coma com dupla transformada de Borel da função de três pontos contendo duas corrente mesônicas pseudoescalares e uma vetorial. Encontramos assim a dependência de momento do fator de forma para cada caso e concluímos que elas levam à mesma constante de acoplamento, permitindo assim obter esta com maior precisão. Estudamos também a regra da soma da função de dois pontos dos mesons J/'psi' e D com o objetvo de aplicar os resultados destas regras de soma na função de três pontos.
Title in English
The J/'psi'-D-D form factor in QCD summation rules
Keywords in English
QUANTUM CHROMODYNAMICS
Abstract in English
The J/'psi'-D-D form factor in QCD summation rules
 
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Publishing Date
2021-06-07
 
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