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Parity Nonconservation in the Photodisintegration of the Deuteron at Low Energy

C. -P. Liu·C. H. Hyun·B. Desplanques
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Abstract

The parity-nonconserving asymmetry in the deuteron photodisintegration, $\vecγ+d\to n+p$, is considered with the photon energy ranged up to 10 MeV above the threshold. The aim is to improve upon a schematic estimate assuming the absence of tensor as well as spin-orbit forces in the nucleon-nucleon interaction. The major contributions are due to the vector-meson exchanges, and the strong suppression of the pion-exchange contribution is confirmed. A simple argument, going beyond the observation of an algebraic cancellation, is presented. Contributions of meson-exchange currents are also considered, but found to be less significant.

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C. -P. Liu, C. H. Hyun, B. Desplanques. 2004-03-01. Parity Nonconservation in the Photodisintegration of the Deuteron at Low Energy. https://doi.org/10.1103/physrevc.69.065502

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