Origin of the anomalous long lifetime of 14C
P Maris, J P Vary, P Navratil, W. E. Ormand, H Nam, Dean, D. J. · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2011
We report the microscopic origins of the anomalously suppressed beta decay of 14C to 14N using the ab initio no-core shell model (NCSM) with the Hamiltonian from chiral effective field theory (EFT) including three-nucleon force (3NF) terms. The 3NF induces unexpectedly large cancellations within the p-shell between contributions to beta decay, which reduce the traditionally large contributions from the NN interactions by an order of magnitude, leading to the long lifetime of 14C.