Longitudinal Polarization of 12B in Muon Capture Reaction

Abstract
A general formula is given for the longitudinal polarization of the recoil nucleus in polarized muon capture in a spin zero nucleus. The longitudinal polarization of the recoil 12B is studied numerically in the reaction 12C+µ-12B+νµ. Contributions from excited states play an important role in determining the induced pseudoscalar and induced tensor form factors. Existing experimental data on the longitudinal polarization and average polarization are consistent with the assumption of time reversal invariance.

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