Role of 2p-2h states in weak 0+−0− transitions in A = 16 nuclei

doi:10.1016/0375-9474(81)90039-7

Nuclear Physics A

Volume 372, Issue 3, 28 December 1981, Pages 331-348

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Abstract

Muon-capture and β-decay rates for the transitions ¹⁶O(0⁺, ground) (a3) ¹⁶N(0⁻, 120 keV) are calculated to second order in perturbation theory. With a one-boson-exchange residual interaction, reasonable agreement to the decay rates Λ_μ and Λ_β can be achieved, but only if meson-exchange corrections are incorporated in the transition operator. These corrections strongly influence the time-like part of the axial-vector current.

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