Chiral two-body currents plus many-body correlations in RPA+PVC quench the axial coupling g_A to 0.73-0.80 and reproduce experimental GT strengths in 56Ni, 100Sn, and 132Sn without extra adjustments.
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Ab initio IM-NCCI calculations on 48Ca establish linear correlations between 0νββ and 2νββ NMEs from 34 chiral Hamiltonians, constraining M^{0ν} to 1.30-1.65 using experimental 2ν data after applying a fitted quenching factor.
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The quenching of the axial-vector coupling constant $g_A$ in $\beta$-decay: joint effects from chiral two-body currents and many-body correlations
Chiral two-body currents plus many-body correlations in RPA+PVC quench the axial coupling g_A to 0.73-0.80 and reproduce experimental GT strengths in 56Ni, 100Sn, and 132Sn without extra adjustments.
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Ab initio correlations between neutrinoless and two-neutrino double-beta decays in $^{48}$Ca
Ab initio IM-NCCI calculations on 48Ca establish linear correlations between 0νββ and 2νββ NMEs from 34 chiral Hamiltonians, constraining M^{0ν} to 1.30-1.65 using experimental 2ν data after applying a fitted quenching factor.