Origin of the anomalous long lifetime of 14C

D. J. Dean; H. Nam; J. P. Vary; P. Maris; P. Navratil; W. E. Ormand

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Origin of the anomalous long lifetime of 14C

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arxiv 1101.5124 v1 pith:EIN7E62D submitted 2011-01-26 nucl-th

P. Maris , J. P. Vary , P. Navratil , W. E. Ormand , H. Nam , D. J. Dean This is my paper · ORCID

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keywords betacontributionsdecaylargelifetimelonganomalousanomalously

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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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