arXiv:1101.5124·v1·Nuclear Theory
Origin of the anomalous long lifetime of 14C
P. Maris🇺🇸 · J. P. Vary🇺🇸 · P. Navratil🇨🇦 · W. E. Ormand🇺🇸 · H. Nam🇺🇸 · D. J. Dean🇺🇸
Abstract
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.
Comments: 4 pages, 2 figures and 2 tables