4.8 Article

Role of Chiral Two-Body Currents in 6Li Magnetic Properties in Light of a New Precision Measurement with the Relative Self-Absorption Technique

Journal

PHYSICAL REVIEW LETTERS
Volume 126, Issue 10, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.102501

Keywords

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Funding

  1. Deutsche Forschungsgemeinschaft (DFG) [SFB 634, 5485852, SFB 1044, 204404729, SFB 1245, 279384907, 39083149]
  2. Bundesministerium fur Bildung und Forschung [05P18PKEN9]
  3. State of Hesse within the LOEWE research project Nuclear Photonics
  4. U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under the FRIB Theory Alliance [DE-SC0013617]
  5. Helmholtz Graduate School for Hadron and Ion Research of the Helmholtz Association
  6. International Max Planck Research School for Precision Tests of Fundamental Symmetries

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This study reported a direct measurement of the decay width of the excited 0(1)(+) state of Li-6 using the relative self-absorption technique. The experimental value obtained provides low uncertainties for testing modern theories of nuclear forces. Additionally, the transition rate was compared to ab initio calculations based on chiral effective field theory to test the impact of two-body currents.
A direct measurement of the decay width of the excited 0(1)(+) state of Li-6 using the relative self-absorption technique is reported. Our value of r not Gamma(gamma,01+ -> 11+) = 8.17(14)(stat)(.) (11)(syst.) eV provides sufficiently low experimental uncertainties to test modem theories of nuclear forces. The corresponding transition rate is compared to the results of ab initio calculations based on chiral effective field theory that take into account contributions to the magnetic dipole operator beyond leading order. This enables a precision test of the impact of two-body currents that enter at next-to-leading order.

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