scholarly journals 0νββ and 2νββ nuclear matrix elements evaluated in closure approximation, neutrino potentials and SU(4) symmetry

2018 ◽  
Vol 98 (6) ◽  
Author(s):  
Fedor Šimkovic ◽  
Adam Smetana ◽  
Petr Vogel
Keyword(s):  
Nuclear Matrix ◽  
Matrix Elements ◽  
Closure Approximation

scholarly journals Double beta decay without invoking closure

2020 ◽  
Vol 1 ◽  
pp. 45
Author(s):  
G. Pantis ◽  
J. D. Vergados
Keyword(s):  
Shell Model ◽  
Beta Decay ◽  
Nuclear Matrix ◽  
Model Space ◽  
Double Beta Decay ◽  
Matrix Elements ◽  
Model Calculations ◽  
Closure Approximation ◽  
The Matrix

The nuclear matrix elements of PU operators entering in the 0v ßß-decay of 76Ge-->76Se have been calculated explicitly  in the context of QRPA within the model space 0f7/2 - 0h11/2. T h e validity of the closure approximation has been tested and seems to be quite satisfactory for those matrix elements which are not usually suppressed. Our results indicate that they are dominated by multipoles other than 0+ and 1+ and that the matrix elements are comparable to those of shell model calculations.

GT strengths studied by (3He, t) reactions and nuclear matrix elements for double beta decays

1997 ◽  
Vol 394 (1-2) ◽  
pp. 23-28 ◽  
Author(s):  
Hidetoshi Akimune ◽  
Hiroyasu Ejiri ◽  
Mamoru Fujiwara ◽  
Izuru Daito ◽  
Toru Inomata ◽  
...  
Keyword(s):  
Nuclear Matrix ◽  
Matrix Elements ◽  
Beta Decays

scholarly journals 0νββ-decay nuclear matrix elements with self-consistent short-range correlations

2009 ◽  
Vol 79 (5) ◽  
Author(s):  
Fedor Šimkovic ◽  
Amand Faessler ◽  
Herbert Müther ◽  
Vadim Rodin ◽  
Markus Stauf
Keyword(s):  
Nuclear Matrix ◽  
Short Range ◽  
Matrix Elements ◽  
Self Consistent ◽  
Short Range Correlations

scholarly journals Neutrinoless double beta nuclear matrix elements around mass 80 in the nuclear shell-model

2015 ◽  
Vol 93 ◽  
pp. 01055
Author(s):  
N. Yoshinaga ◽  
K. Higashiyama ◽  
D. Taguchi ◽  
E. Teruya
Keyword(s):  
Shell Model ◽  
Nuclear Matrix ◽  
Nuclear Shell Model ◽  
Matrix Elements ◽  
Nuclear Shell

scholarly journals Disassembling the nuclear matrix elements of the neutrinoless ββ decay

2009 ◽  
Vol 818 (3-4) ◽  
pp. 139-151 ◽  
Author(s):  
J. Menéndez ◽  
A. Poves ◽  
E. Caurier ◽  
F. Nowacki
Keyword(s):  
Nuclear Matrix ◽  
Matrix Elements

scholarly journals Variation of NMEs of 0νββ for 48Ca with different components of NN interaction

2019 ◽  
Vol 223 ◽  
pp. 01057
Author(s):  
Shahariar Sarkar ◽  
Pawan Kumar ◽  
Kanhaiya Jha ◽  
P.K. Raina
Keyword(s):  
Beta Decay ◽  
Nuclear Matrix ◽  
Model Space ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Central Component ◽  
Spin Orbit ◽  
Matrix Elements ◽  
Nucleon Interaction ◽  
Total Interaction

We examine the sensitivity of nuclear matrix elements (NMEs) for light-neutrino exchange mechanism of neutrinoless double beta decay (0νββ) for 48Ca to the various components of two-nucleon interaction, GXPF1A, in fp model space. It is found that the contribution in NMEs coming from the central component is close to contribution from total interaction. The spin-orbit and tensor components are found canceling the contribution of each other.

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