Precision Measurement of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>n</mml:mi><mml:mo>−</mml:mo><mml:mi>p</mml:mi></mml:math>Charge-Exchange Cross Section at 647 MeV

The differential cross section for $n\ensuremath{-}p$ elastic scattering in the angular region $145\ifmmode^\circ\else\textdegree\fi{}&lt;{\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.}&lt;180\ifmmode^\circ\else\textdegree\fi{}$ has been measured with high statistical accuracy using the monoenergetic neutron beam at Clinton P. Anderson Meson Physics Facility. The results differ significantly from previous Dubna and Princeton-Pennsylvania Accelerator results but agree reasonably well with recent Saclay data except at extreme backward angles.