Where do we stand with calculations of the two-neutrino double beta decay rates?

1991 ◽  
Vol 41 (11) ◽  
pp. 1105-1108 ◽  
Author(s):  
F. Šimkovic ◽  
M. Gmitro
Keyword(s):  
Beta Decay ◽  
Decay Rates ◽  
Double Beta Decay

scholarly journals Neutrinoless Double-beta Decay Rates Around Mass 80 In The Nuclear Shell Model

2017 ◽  
Author(s):  
Kota Yanase ◽  
Naotaka Yoshinaga ◽  
Koji Higashiyama ◽  
Eri Teruya ◽  
Daisuke Taguchi
Keyword(s):  
Shell Model ◽  
Beta Decay ◽  
Neutrinoless Double Beta Decay ◽  
Decay Rates ◽  
Double Beta Decay ◽  
Nuclear Shell Model ◽  
Nuclear Shell

Ratio of double beta-decay rates of 128,130Te

1991 ◽  
Vol 529 (1) ◽  
pp. 29-38 ◽  
Author(s):  
J.T. Lee ◽  
O.K. Manuel ◽  
R.I. Thorpe
Keyword(s):  
Beta Decay ◽  
Decay Rates ◽  
Double Beta Decay

Calculation of double beta decay rates and the neutrino mass

1986 ◽  
Vol 460 (3) ◽  
pp. 395-436 ◽  
Author(s):  
K. Grotz ◽  
H.V. Klapdor
Keyword(s):  
Beta Decay ◽  
Neutrino Mass ◽  
Decay Rates ◽  
Double Beta Decay

Calculation of double-beta-decay rates and the neutrino mass

1986 ◽  
Vol 9 (2) ◽  
pp. 535-550
Author(s):  
K. Grotz ◽  
H. V. Klapdor
Keyword(s):  
Beta Decay ◽  
Neutrino Mass ◽  
Decay Rates ◽  
Double Beta Decay

Calculation of double beta-decay rates using nuclear form factors

1988 ◽  
Vol 100 (6) ◽  
pp. 941-952 ◽  
Author(s):  
A. Bottino ◽  
C. Giunti ◽  
C. W. Kim
Keyword(s):  
Beta Decay ◽  
Form Factors ◽  
Decay Rates ◽  
Double Beta Decay

scholarly journals Angular Distributions of Emitted Electrons in the Two-Neutrino ββ Decay

Universe ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 147
Author(s):  
Ovidiu Niţescu ◽  
Rastislav Dvornický ◽  
Sabin Stoica ◽  
Fedor Šimkovic
Keyword(s):  
Nuclear Structure ◽  
Angular Correlation ◽  
Beta Decay ◽  
Axial Vector ◽  
Correlation Factor ◽  
Decay Rates ◽  
Double Beta Decay ◽  
Angular Distributions ◽  
Matrix Elements ◽  
Vector Coupling

The two-neutrino double-beta decay (2νββ-decay) process is attracting more and more attention of the physics community due to its potential to explain nuclear structure aspects of involved atomic nuclei and to constrain new (beyond the Standard model) physics scenarios. Topics of interest are energy and angular distributions of the emitted electrons, which might allow the deduction of valuable information about fundamental properties and interactions of neutrinos once a new generation of the double-beta decay experiments will be realized. These tasks require an improved theoretical description of the 2νββ-decay differential decay rates, which is presented. The dependence of the denominators in nuclear matrix elements on lepton energies is taken into account via the Taylor expansion. Both the Fermi and Gamow-Teller matrix elements are considered. For nuclei of experimental interest, relevant phase-space factors are calculated by using exact Dirac wave functions with finite nuclear size and electron screening. The uncertainty of the angular correlation factor on nuclear structure parameters is discussed. It is emphasized that the effective axial-vector coupling constant gAeff can be determined more reliably by accurately measuring the angular correlation factor.

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