TY - JOUR
T1 - Effects of three-nucleon forces and two-body currents on Gamow-Teller strengths
AU - Ekström, A.
AU - Jansen, G. R.
AU - Wendt, K. A.
AU - Hagen, G.
AU - Papenbrock, T.
AU - Bacca, S.
AU - Carlsson, B.
AU - Gazit, D.
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/12/30
Y1 - 2014/12/30
N2 - We optimize chiral interactions at next-to-next-to leading order to observables in two- and three-nucleon systems and compute Gamow-Teller transitions in C14 and O22,24 using consistent two-body currents. We compute spectra of the daughter nuclei N14 and F22,24 via an isospin-breaking coupled-cluster technique, with several predictions. The two-body currents reduce the Ikeda sum rule, corresponding to a quenching factor q2≈0.84-0.92 of the axial-vector coupling. The half-life of C14 depends on the energy of the first excited 1+ state, the three-nucleon force, and the two-body current.
AB - We optimize chiral interactions at next-to-next-to leading order to observables in two- and three-nucleon systems and compute Gamow-Teller transitions in C14 and O22,24 using consistent two-body currents. We compute spectra of the daughter nuclei N14 and F22,24 via an isospin-breaking coupled-cluster technique, with several predictions. The two-body currents reduce the Ikeda sum rule, corresponding to a quenching factor q2≈0.84-0.92 of the axial-vector coupling. The half-life of C14 depends on the energy of the first excited 1+ state, the three-nucleon force, and the two-body current.
UR - https://www.scopus.com/pages/publications/84929380442
U2 - 10.1103/PhysRevLett.113.262504
DO - 10.1103/PhysRevLett.113.262504
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AN - SCOPUS:84929380442
SN - 0031-9007
VL - 113
JO - Physical Review Letters
JF - Physical Review Letters
IS - 26
M1 - 262504
ER -