Speaker
Dr
Teng Wang
(Peking University)
Description
We report the first exploratory study on nuclear $\beta$-decay through nuclear lattice effective field theory, including $^3$H and $^6$He $\beta$-decays. We employ nuclear forces and nuclear one-body and two-body axial currents consistently derived from chiral effective field theory to calculate the Gamow-Teller matrix element(GTME). We first combine the GTME of $^3$H $\beta$-decay together with $^3$H's binding energy to fix the low-energy constants $c_D$ and $c_E$ in the three-body nuclear force. We then carry out Monte Carlo calculation to predict the GTME of $^6$He $\beta$-decay. New techniques are developed to make the calculation reliable and efficient. The result shows good agreement with the experiment.
Primary author
Dr
Teng Wang
(Peking University)
Co-authors
Mr
Bing-Nan Lu
(Graduate School of China Academy of Engineering Physics)
Mr
Xu Feng
(Peking University)
