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

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

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

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arxiv 0801.4600 v1 pith:L3KIDD6B submitted 2008-01-30 nucl-ex

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

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G.J. Weisel

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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.

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

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