Publications
Publication Information
| Title | Chiral Effective Field Theory Calculations of Weak Transitions in Light Nuclei |
| Authors | G. King, Lorenzo Andreoli, Saori Pastore, Maria Piarulli, Rocco Schiavilla, Robert Wiringa, J. Carlson, Stefano Gandolfi |
| JLAB number | JLAB-THY-20-3175 |
| LANL number | arXiv:2004.05263 |
| Other number | DOE/OR/23177-4955 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review C Volume 102 Page(s) 025501 Refereed | |
| Publication Abstract: | We report Quantum Monte Carlo calculations of weak transitions in $A\leq 10$ nuclei, based on the Norfolk two- and three-nucleon chiral interactions, and associated one- and two-body axial currents. We find that the contribution from two-body currents is at the 2--3\% level, with the exception of matrix elements entering the rates of $^8$Li and $^8$B beta decays to the first excited state of $^8$Be. These matrix elements are suppressed in impulse approximation based on the (leading order) Gamow Teller transition operator alone; two-body currents provide a $20$--$30\%$ correction, which is, however, insufficient to bring theory in agreement with experimental data. For the other transitions, the agreement with the data is satisfactory, and the results exhibit a negligible to mild model dependence when different combinations of Norfolk interactions are utilized to construct the nuclear wave functions. We report a complete study of two-body weak transition densities which reveals the expected universal behavior of two-body currents at short distances throughout the range of $A\,$=$\,3$ to $A\,$=$\,10$ systems considered here. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevC.102.025501 |
| Accepted Manuscript: | 2004.05263.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |