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Recoil alignment in muon capture on nitrogen-14

T. P. Gorringe·D. P. Corbin·T. J. Stocki
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Abstract

We report a measurement of the longitudinal alignment $A_L$ of the recoil nucleus in the $μ^- + ^{14}$N$(1^+, 0)$ $\to$ $ν_μ + ^{14}$C$(2^+, 7012)$ transition. The experiment was performed on the M9B beamline at the TRIUMF cyclotron via the measurement of the Doppler lineshape of the subsequent $^{14}$C$(2^+, 7012)$ $\to$ $^{14}$C$(0^+, 0)$ gamma-rays. We compare our result $A_L = 0.60 \pm 0.11$ to various model calculations, and discuss the sensitivity to the induced pseudoscalar coupling, second-forbidden effects and $2 \hbar ω$ wavefunction admixtures.

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T. P. Gorringe, D. P. Corbin, T. J. Stocki. 2004-10-08. Recoil alignment in muon capture on nitrogen-14. https://doi.org/10.1103/physrevc.71.035503

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