Origin of the anomalous long lifetime of 14C

Details Origin of the anomalous long lifetime of 14C Origin of the anomalous long lifetime of 14C

2011-01-26

arxiv.org/abs/1101.5124v1

Phys.Rev.Lett.106:202502,2011

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures and 2 tables

Scientific paper

10.1103/PhysRevLett.106.202502

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.

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