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arXiv · 0801.4600

Neutron-proton analyzing power at 12 MeV and inconsistencies in parametrizations of nucleon-nucleon data

R. T. Braun·W. Tornow·C. R. Howell·D. E. Gonzalez Trotter·C. D. Roper·F. Salinas·H. R. Setze·R. L. Walter·G. J. Weisel
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Abstract

We present the most accurate and complete data set for the analyzing power Ay(theta) in neutron-proton scattering. The experimental data were corrected for the effects of multiple scattering, both in the center detector and in the neutron detectors. The final data at En = 12.0 MeV deviate considerably from the predictions of nucleon-nucleon phase-shift analyses and potential models. The impact of the new data on the value of the charged pion-nucleon coupling constant is discussed in a model study.

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R. T. Braun, W. Tornow, C. R. Howell, D. E. Gonzalez Trotter, C. D. Roper, F. Salinas, H. R. Setze, R. L. Walter, G. J. Weisel. 2008-01-30. Neutron-proton analyzing power at 12 MeV and inconsistencies in parametrizations of nucleon-nucleon data. https://doi.org/10.1016/j.physletb.2007.12.039

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