Document Type

Article

Publication Date

1994

DOI

10.1103/PhysRevC.50.1771

Publication Title

Physical Review C

Volume

50

Issue

4

Pages

1771-1786

Abstract

Energy spectra of both protons and deuterons emitted following the capture of negative muons by 3He nuclei have been measured for energies above 15 MeV. A limited number of proton-neutron pairs emitted in coincidence were also observed. A simple plane wave impulse approximation (PWIA) model calculation yields fair agreement with the measured proton energy spectra, but underpredicts the measured rate of deuteron production above our energy threshold by a large factor. A more sophisticated PWIA calculation for the two-body breakup channel, based on a realistic three-body wave function for the initial state, is closer to the deuteron data at moderate energies, but still is significantly lower near the kinematic end point. The proton-neutron coincidence data also point to the presence of significant strength involving more than one nucleon in the capture process at high energy transfer. These results indicate that additional terms in the capture matrix element beyond the impulse approximation contribution may be required to explain the experimental data. Specifically, the inclusion of nucleon-nucleon correlations in the initial or final state and meson exchange current contributions could bring calculations into better agreement with our data. A fully microscopic calculation would thus open the possibility for a quantitative test of multinucleon effects in the weak interaction.

Comments

© 1994 The American Physical Society

"Yes, the author or the author's employer may use all or part of the APS published article, including the APS-prepared version (e.g., the PDF from the online journal) without revision or modification, on the author's or employer's website as long as a fee is not charged. If a fee is charged, then APS permission must be sought. In all cases, the appropriate bibliographic citation and notice of the APS copyright must be included."

Publisher's version available at: https://doi.org/10.1103/PhysRevC.50.1771

Original Publication Citation

Kuhn, S.E., Cummings, W.J., Dodge, G.E., ... Chung, K.S., Lee, J.M., Rosenzweig, D.P. (1994). Multinucleon effects in muon capture on ³He at high energy transfer. Physical Review C, 50(4), 1771-1786. https://doi.org/10.1103/PhysRevC.50.1771

ORCID

0000-0003-1582-2376 (Dodge), 0000-0003-2243-6836 (Kuhn)

Download

Share

COinS