title: Origin of the anomalous long lifetime of ¹⁴C.
abstract: We report the microscopic origins of the anomalously suppressed beta decay of ¹⁴C to ¹⁴N using the ab initio no-core shell model with the Hamiltonian from the chiral effective field theory including three-nucleon force terms. The three-nucleon force induces unexpectedly large cancellations within the p shell between contributions to beta decay, which reduce the traditionally large contributions from the nucleon-nucleon interactions by an order of magnitude, leading to the long lifetime of ¹⁴C.
authors.affiliation: Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011-3160, USA.
authors.forename: P
authors.initials: P
authors.lastname: Maris
authors.forename: J P
authors.initials: JP
authors.lastname: Vary
authors.forename: P
authors.initials: P
authors.lastname: Navrátil
authors.forename: W E
authors.initials: WE
authors.lastname: Ormand
authors.forename: H
authors.initials: H
authors.lastname: Nam
authors.forename: D J
authors.initials: DJ
authors.lastname: Dean