Shell model description of the 14C dating beta decay with Brown-Rho-scaled NN interactions

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dc.creatorHolt, J. W.
dc.creatorBrown, G. E.
dc.creatorKuo, T. T. S.
dc.creatorHolt, J. D.
dc.creatorMachleidt, R.
dc.date2007-10-01
dc.date2008-02-06
dc.date.accessioned2026-07-07T11:19:41Z
dc.date.available2026-07-07T11:19:41Z
dc.descriptionWe present shell model calculations for the beta-decay of the 14C ground state to the 14N ground state, treating the states of the A=14 multiplet as two 0p holes in an 16O core. We employ low-momentum nucleon-nucleon (NN) interactions derived from the realistic Bonn-B potential and find that the Gamow-Teller matrix element is too large to describe the known lifetime. By using a modified version of this potential that incorporates the effects of Brown-Rho scaling medium modifications, we find that the GT matrix element vanishes for a nuclear density around 85% that of nuclear matter. We find that the splitting between the (J,T)=(1+,0) and (J,T)=(0+,1) states in 14N is improved using the medium-modified Bonn-B potential and that the transition strengths from excited states of 14C to the 14N ground state are compatible with recent experiments.
dc.description4 pages, 5 figures Updated to include referee comments/suggestions
dc.identifierhttps://arxiv.org/abs/0710.0310
dc.identifierhttp://arxiv.org/abs/0710.0310
dc.identifierPhys.Rev.Lett.100:062501,2008
dc.identifierdoi:10.1103/PhysRevLett.100.062501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193765
dc.subjectNuclear Theory
dc.titleShell model description of the 14C dating beta decay with Brown-Rho-scaled NN interactions
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