The gDsDsϕ strong coupling constant from QCD Sum Rules

2017 ◽  
Vol 957 ◽  
pp. 109-122 ◽  
Author(s):  
B. Osório Rodrigues ◽  
M.E. Bracco ◽  
A. Cerqueira
Keyword(s):  
Strong Coupling ◽  
Sum Rules ◽  
Strong Coupling Constant ◽  
Coupling Constant ◽  
Qcd Sum Rules

A QCD sum rules calculation of the J/ψD s * Ds strong coupling constant

2015 ◽  
Vol 51 (3) ◽  
Author(s):  
Bruno Osório Rodrigues ◽  
Mirian Enriqueta Bracco ◽  
Marcelo Chiapparini ◽  
Angelo Cerqueira
Keyword(s):  
Strong Coupling ◽  
Sum Rules ◽  
Strong Coupling Constant ◽  
Coupling Constant ◽  
Qcd Sum Rules

scholarly journals Analysis of the strong vertices of ΣcND∗ and ΣbNB∗ in QCD sum rules

2018 ◽  
Vol 33 (36) ◽  
pp. 1850217
Author(s):  
Guo-Liang Yu ◽  
Rong-Hua Guan ◽  
Zhi-Gang Wang
Keyword(s):  
Strong Coupling ◽  
Sum Rules ◽  
Form Factors ◽  
Coupling Constants ◽  
Coupling Constant ◽  
Strong Decay ◽  
Qcd Sum Rules ◽  
Dirac Structures ◽  
Analytical Functions ◽  
Perturbative Part

The strong coupling constant is an important parameter that can help us understand the strong decay behaviors of baryons. In our previous work, we have analyzed the strong vertices [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] in QCD sum rules. Following these works, we further analyze the strong vertices [Formula: see text] and [Formula: see text] using the three-point QCD sum rules under Dirac structures [Formula: see text] and [Formula: see text]. In this work, we first calculate strong form-factors considering contributions of the perturbative part and the condensate terms [Formula: see text], [Formula: see text] and [Formula: see text]. Then, these form-factors are used to fit into analytical functions. According to these functions, we finally determine the values of the strong coupling constants for these two vertices [Formula: see text] and [Formula: see text].

scholarly journals Spin Sum Rules and the Strong Coupling Constant at large distance

2009 ◽  
Author(s):  
A. Deur ◽  
Jian-Ping Chen ◽  
Karl Slifer ◽  
Wally Melnitchouk
Keyword(s):  
Strong Coupling ◽  
Large Distance ◽  
Sum Rules ◽  
Strong Coupling Constant ◽  
Coupling Constant
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