Effects of Three-Nucleon Forces and Two-Body Currents on Gamow-Teller Strengths

2014/06/18 by A. Ekström, G. R. Jansen, G. R. Jansen +11 · 70 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Approx #Atomic physics #Cluster (spacecraft) #Coupling (piping) #Energy (signal processing) #Excited state #Isospin #Many-body problem #Nuclear physics research studies #Nucleon #Observable #Order (exchange) #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quenching (fluorescence) #Spectral line #Sum rule in quantum mechanics #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevlett.113.262504

published in Physical Review Letters 113(26), 262504 (American Physical Society)

arxiv created 2014/06/18 · openalex publication_date 2014/12/30 · arxiv updated 2014/12/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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 14C and (22,24)O using consistent two-body currents. We compute spectra of the daughter nuclei 14N and (22,24)F 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 14C depends on the energy of the first excited 1+ state, the three-nucleon force, and the two-body current.

Citations

• Medium-Mass Nuclei with Normal-Ordered ChiralNN+3NInteractions

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