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

2006 ◽  
Vol 153 (1) ◽  
pp. 229-233 ◽  
Author(s):  
M. Procura ◽  
T.R. Hemmert ◽  
B.U. Musch ◽  
W. Weise
Keyword(s):  
Quark Mass ◽  
Axial Vector ◽  
Nucleon Mass ◽  
Mass Dependence ◽  
Coupling Constant ◽  
Vector Coupling ◽  
Vector Coupling Constant ◽  
Axial Vector Coupling ◽  
Quark Mass Dependence

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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