Quantum Monte Carlo calculations of magnetic moments and M1 transitions in $A\leq7$ nuclei including meson-exchange currents

Marcucci, Laura; Pervin, Muslema; Pieper, Steven; Schiavilla, Rocco; Wiringa, Robert

doi:10.1103/PhysRevC.78.065501

Quantum Monte Carlo calculations of magnetic moments and M1 transitions in $$A\leq7$$ nuclei including meson-exchange currents

Journal Article · Mon Dec 01 04:00:00 EST 2008 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.78.065501· OSTI ID:956063

Marcucci, Laura; Pervin, Muslema; Pieper, Steven; Schiavilla, Rocco; Wiringa, Robert

Green's function Monte Carlo calculations of magnetic moments and $M1$ transitions including two-body meson-exchange current (MEC) contributions are reported for $$A\leq7$$ nuclei. The realistic Argonne $$v_{18}$$ two-nucleon and Illinois-2 three-nucleon potentials are used to generate the nuclear wave functions. The two-body meson-exchange operators are constructed to satisfy the continuity equation with the Argonne $$v_{18}$$ potential. The MEC contributions increase the $$A$$=3,7 isovector magnetic moments by 16\% and the $$A$$=6,7 transition rates by 17--34\%, bringing them into very good agreement with the experimental data.

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Research Organization:: Thomas Jefferson Lab National Accelerator Facility

Sponsoring Organization:: USDOE

OSTI ID:: 956063

Report Number(s):: JLAB-THY-08-880; arXiv:0810.0547; DOE/OR/23177-0539

Journal Information:: Physical Review C, Journal Name: Physical Review C Vol. 78; ISSN 0556-2813; ISSN PRVCAN

Country of Publication:: United States

Language:: English

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