https://www.sciencedaily.com/releases/2018/05/180530133018.htm

Now, a team led by scientists in the Nuclear Science Division at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) has enlisted powerful supercomputers to calculate a quantity known as the "nucleon axial coupling," or gA -- which is central to our understanding of a neutron's lifetime -- with an unprecedented precision. Their method offers a clear path to further improvements that may help to resolve the experimental discrepancy.

To achieve their results, the researchers created a microscopic slice of a simulated universe to provide a window into the subatomic world. Their study was published online May 30 in the journal Nature.