Discrepancies between Global Nucleon-Nucleon Phase Shifts and New Data forn−pScattering at 16.9 MeV
- 10 October 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 39 (15), 915-918
- https://doi.org/10.1103/physrevlett.39.915
Abstract
Data for the analyzing power Ay(θ) for n−p scattering at 16.9 MeV have been measured for the range from 50 to 145° (c.m.). Eleven values are reported to an accuracy of about ±0.002, the highest overall precision ever obtained in any fast-neutron polarization experiment. Predictions based on phase-shift sets obtained from global analyses of nucleon-nucleon scattering disagree significantly with the new data. The data are sufficiently precise to show a dependence on the f-wave spin-orbit phase parameter.Keywords
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