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Measurement of the Absolute Differential Cross Section for np Elastic Scattering at 194 MeV

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arxiv nucl-ex/0602017 v1 pith:QAZSDLPX submitted 2006-02-16 nucl-ex

Measurement of the Absolute Differential Cross Section for np Elastic Scattering at 194 MeV

classification nucl-ex
keywords absoluteanalysiscrossdatabasedifferentialexperimentmeasurementpartial
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A tagged medium-energy neutron beam has been used in a precise measurement of the absolute differential cross section for np back-scattering. The results resolve significant discrepancies within the np database concerning the angular dependence in this regime. The experiment has determined the absolute normalization with 1.5% uncertainty, suitable to verify constraints of supposedly comparable precision that arise from the rest of the database in partial wave analyses. The analysis procedures, especially those associated with evaluation of systematic errors in the experiment, are described in detail so that systematic uncertainties may be included in a reasonable way in subsequent partial wave analysis fits incorporating the present results.

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