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24 April 2024

» pubmed » pmid15783880

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Measurement of the absolute n p scattering differential cross section at 194 MeV
M Sarsour ; T Peterson ; M Planinic ; S E Vigdor ; C Allgower ; B Bergenwall ; J Blomgren ; T Hossbach ; W W Jacobs ; C Johansson ; J Klug ; A V Klyachko ; P Nadel-Turonski ; L Nilsson ; N Olsson ; S Pomp ; J Rapaport ; T Rinckel ; E J Stephenson ; U Tippawan ; S W Wissink ; Y Zhou ;
Date:	4 Mar 2005
Journal:	Phys Rev Lett, 94 (8), 082303
Abstract:	We describe a double-scattering experiment with a novel tagged neutron beam to measure differential cross sections for np backscattering to better than +/-2% absolute precision. The measurement focuses on angles and energies where the cross section magnitude and angle dependence constrain the charged pion-nucleon coupling constant, but existing data show serious discrepancies among themselves and with energy-dependent partial-wave analyses. The present results are in good accord with the partial-wave analyses, but deviate systematically from other recent measurements.
Source:	PubMed, pmid15783880
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