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Parity Violating Interactions and Currents in the Deuteron

R. Schiavilla·J. Carlson·M. Paris
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Abstract

We investigate parity-violating asymmetries in polarized n p radiative capture, and deuteron electro-disintegration in quasi-elastic kinematics, using the DDH model for the parity-violating nucleon-nucleon interaction. We find dramatic cancellations between the asymmetries induced by the parity-violating interaction and those arising from the associated parity-violating pion-exchange currents. In np capture, the model-dependence of the result is nevertheless quite small because of constraints arising through the Siegert evaluation of the relevant E1 matrix element. In quasi-elastic electron scattering these processes are found to be insignificant comared to the asymmetry produced by the gamma-Z interference on individual nucleons. These two experiments, then, provide clean probes of different aspects of weak-interaction physics associated with parity violation in the np system.

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R. Schiavilla, J. Carlson, M. Paris. 2002-12-06. Parity Violating Interactions and Currents in the Deuteron. https://doi.org/10.1103/physrevc.67.032501

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