| Autor: |
Ekström, A., Jansen, G. R., Wendt, K. A., Hagen, G., Papenbrock, T., Bacca, S., Carlsson, B., Gazit, D. |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. Lett. 113, 262504 (2014) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.113.262504 |
| Popis: |
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 carbon-14, oxygen-22 and oxygen-24 using consistent two-body currents. We compute spectra of the daughter nuclei nitrogen-14, fluorine-22 and fluorine-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 q^2 ~ 0.84-0.92 of the axial-vector coupling. The half life of carbon-14 depends on the energy of the first excited 1+ state, the three-nucleon force, and the two-body current. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
