Large-Angle Neutron-Proton Elastic Scattering from 5 to 12 GeV/c

Neutron-proton differential cross sections have been measured with good statistics for four-momentum transfers $0.14<-t\lesssim 19.0$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^2$ at laboratory momenta ranging from 4.5 to 12.5 GeV/c. The experiment was carried out in a neutron beam at the Argonne National Laboratory zero-gradient synchrotron. These results in conjunction with previous $n-p$ charge-exchange data provide almost complete elastic-scattering angular distributions in this momentum range.