Erratum: Deformation effect on the double Gamow-Teller matrix element of100Mofor the0+→0+transition [Phys. Rev. C65, 034311 (2002)]

2003 ◽  
Vol 67 (5) ◽  
Author(s):  
B. M. Dixit ◽  
P. K. Rath ◽  
P. K. Raina
Keyword(s):  
Matrix Element ◽  
Deformation Effect ◽  
Gamow Teller

scholarly journals Local chiral interactions, the tritium Gamow-Teller matrix element, and the three-nucleon contact term

2018 ◽  
Vol 98 (4) ◽  
Author(s):  
A. Baroni ◽  
R. Schiavilla ◽  
L. E. Marcucci ◽  
L. Girlanda ◽  
A. Kievsky ◽  
...  
Keyword(s):  
Matrix Element ◽  
Contact Term ◽  
Chiral Interactions ◽  
Gamow Teller

Comments on the effect of Δ (1232 MeV)-hole excitation in quenching the gamow-teller matrix element

1983 ◽  
Vol 122 (2) ◽  
pp. 126-130 ◽  
Author(s):  
A. Arima ◽  
T. Cheon ◽  
K. Shimizu ◽  
H. Hyuga ◽  
T. Suzuki
Keyword(s):  
Matrix Element ◽  
Hole Excitation ◽  
Gamow Teller

GT± STRENGTH DISTRIBUTION IN 48Sc AND 116In MEASURED BY (p, n) AND (n, p) REACTIONS AT 300 MeV AND THEIR IMPLICATIONS FOR 2ν2β DECAY

2009 ◽  
Vol 18 (10) ◽  
pp. 2119-2123
Author(s):  
HIDE SAKAI ◽  
KENTARO YAKO ◽  
ICHOR COLLABORATION
Keyword(s):  
Matrix Element ◽  
Excitation Energy ◽  
Cross Sections ◽  
Nuclear Matrix ◽  
Differential Cross ◽  
Nuclear Matrix Element ◽  
Strength Distribution ◽  
Angular Distributions ◽  
Decomposition Technique ◽  
Gamow Teller

Angular distributions of the double differential cross sections for the 48 Ca , 116 Cd (p, n) and the 48 Ti , 116 Sn (n, p) reactions were measured at 300 MeV. A multipole decomposition technique was applied to the spectra to extract the Gamow-Teller (GT) transition strengths. In both (n, p) spectra beyond 8 MeV excitation energy extra B( GT +) strengths which are not predicted by either shell model or QRPA calculations. This extra B( GT +) strengths certainly contribute to the nuclear matrix element of the 2ν2β-decay.

Axial Currents in Nuclei: The Gamow-Teller Matrix Element

1979 ◽  
Vol 42 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Eulogio Oset ◽  
Mannque Rho
Keyword(s):  
Matrix Element ◽  
Gamow Teller

scholarly journals Dispersion relation analysis of the radiative corrections to gA in the neutron β-decay

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Mikhail Gorchtein ◽  
Chien-Yeah Seng
Keyword(s):  
Matrix Element ◽  
Dispersion Relation ◽  
Form Factors ◽  
Radiative Corrections ◽  
Coupling Constant ◽  
Β Decay ◽  
Relation Analysis ◽  
Elastic Form ◽  
Gamow Teller ◽  
Better Than

Abstract We present the first and complete dispersion relation analysis of the inner radiative corrections to the axial coupling constant gA in the neutron β-decay. Using experimental inputs from the elastic form factors and the spin-dependent structure function g1, we determine the contribution from the γW-box diagram to a precision better than 10−4. Our calculation indicates that the inner radiative corrections to the Fermi and the Gamow-Teller matrix element in the neutron β-decay are almost identical, i.e. the ratio λ = gA/gV is almost unrenormalized. With this result, we predict the bare axial coupling constant to be $$ {\overset{\circ }{g}}_A=-1.2754{(13)}_{\mathrm{exp}}{(2)}_{\mathrm{RC}} $$ g ∘ A = − 1.2754 13 exp 2 RC based on the PDG average λ = −1.2756(13).

Evaluation of the β+ decay log ft value with inclusion of the neutron–proton pairing and particle number conservation

2015 ◽  
Vol 24 (02) ◽  
pp. 1550014 ◽  
Author(s):  
S. Kerrouchi ◽  
N. H. Allal ◽  
M. Fellah ◽  
M. R. Oudih
Keyword(s):  
Particle Number ◽  
Transition Probabilities ◽  
Bcs Theory ◽  
Nuclear Deformation ◽  
Β Decay ◽  
Deformation Effect ◽  
Particle Number Conservation ◽  
Fluctuation Effects ◽  
Proton Pairing ◽  
Gamow Teller

The particle number fluctuation effects, which are inherent to the Bardeen–Cooper–Schrieffer (BCS) theory, on the beta decay log ft values are studied in the isovector case. Expressions of the transition probabilities, of Fermi as well as Gamow–Teller types, which strictly conserve the particle number are established using a projection method. The probabilities are calculated for some transitions of isobars such as N ≃ Z. The obtained results are compared to values obtained before the projection. The nuclear deformation effect on the log ft values is also studied.

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