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Effects of Three-Nu...
Effects of Three-Nucleon Forces and Two-Body Currents on Gamow-Teller Strengths
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Ekström, Andreas (author)
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Jansen, Gustav R. (author)
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Wendt, Kyle A. (author)
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Hagen, Gaute (author)
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Papenbrock, Thomas (author)
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Bacca, Sonia (author)
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- Karlsson, Boris, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Gazit, Doron (author)
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(creator_code:org_t)
- 2014
- 2014
- English.
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In: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 113:26, s. 262504-
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Abstract
Subject headings
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- We optimize chiral interactions at next-to-next-to leading order to observables in two- and three-nucleon systems and compute Gamow-Teller transitions in C14 and O22,24 using consistent two-body currents. We compute spectra of the daughter nuclei N14 and F22,24 via an isospin-breaking coupled-cluster technique, with several predictions. The two-body currents reduce the Ikeda sum rule, corresponding to a quenching factor q2≈0.84–0.92 of the axial-vector coupling. The half-life of C14 depends on the energy of the first excited 1+ state, the three-nucleon force, and the two-body current.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Gamow-Teller transition
- Effective field theory
- Coupled Cluster
Publication and Content Type
- art (subject category)
- ref (subject category)
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