scholarly journals Quark mass dependence of the nucleon axial-vector coupling constant

2003 ◽  
Vol 68 (7) ◽  
Author(s):  
Thomas R. Hemmert ◽  
Massimiliano Procura ◽  
Wolfram Weise
Keyword(s):  
Quark Mass ◽  
Axial Vector ◽  
Mass Dependence ◽  
Coupling Constant ◽  
Vector Coupling ◽  
Vector Coupling Constant ◽  
Axial Vector Coupling ◽  
Quark Mass Dependence ◽  
Nucleon Axial Vector Coupling

GA/GV in the quark model

1985 ◽  
Vol 63 (11) ◽  
pp. 1425-1426
Author(s):  
Kim Maltman
Keyword(s):  
Quark Model ◽  
Axial Vector ◽  
Coupling Constant ◽  
Vector Coupling ◽  
Vector Coupling Constant ◽  
Pion Emission ◽  
Nonrelativistic Quark Model ◽  
Axial Vector Coupling ◽  
Nucleon Axial Vector Coupling

It is shown that the naive nonrelativistic quark model, in the presence of pion emission and absorption, reproduces the usual Goldberger–Treiman relation for the nucleon axial–vector coupling constant.

On the renormalization of the axial vector coupling constant in β-decay

1960 ◽  
Vol 16 (3) ◽  
pp. 560-568 ◽  
Author(s):  
J. Bernstein ◽  
M. Gell-Mann ◽  
L. Michel
Keyword(s):  
Axial Vector ◽  
Coupling Constant ◽  
Β Decay ◽  
Vector Coupling ◽  
Vector Coupling Constant ◽  
Axial Vector Coupling

scholarly journals Two neutrino double-beta decay and effective axial-vector coupling constant

2018 ◽  
Vol 194 ◽  
pp. 02002
Author(s):  
Fedor Šimkovic ◽  
Rastislav Dvornický ◽  
Dušan Štefánik
Keyword(s):  
Beta Decay ◽  
Axial Vector ◽  
Double Beta Decay ◽  
Matrix Elements ◽  
Coupling Constant ◽  
Vector Coupling ◽  
Majorana Particle ◽  
Vector Coupling Constant ◽  
Novel Approach ◽  
Axial Vector Coupling

The theoretical and experimental study of the two-neutrino double-beta decay (2νββ-decay) is of crucial importance for reliable calculation of matrix elements governing the neutrinoless double-beta decay (0νββ-decay). That will allow to determine masses of neutrinos once the 0νββ-decay, which occurs if the neutrino is a massive Majorana particle and the total lepton number is not onserved, will be observed. Experiments studying the 2νββ-decay are currently approaching a qualitatively new level, where high-precision measurements are performed not only for half-lives but for all other observables of the process. In this context an improved formula for the 2νββ-decay is presented. Further, a novel approach for determining the effective axial-vector coupling constant is proposed.

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