Measurement of np elastic scattering at high energies and very small momentum transfers

doi:10.1016/0550-3213(84)90034-8

Nuclear Physics B

Volume 232, Issue 3, 13 February 1984, Pages 365-397

https://doi.org/10.1016/0550-3213(84)90034-8 Get rights and content

Abstract

The np elastic differential cross section has been measured for incident neutron momenta 100–400 GeV/c in the |t| range 6 · 10⁻⁶ − 5 · 10⁻¹ (GeV/c)². The np data of this experiment provide a first direct measurement of the hadronic amplitude for |t| < 10⁻² (GeV/c)², which is consistent with the extrapolations from higher |t| values. Our data for |t| < 10⁻⁴ (GeV/c)² are consistent with a rise which can be attributed to Schwinger scattering, caused by the interaction of the neutron magnetic moment with the proton.

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^☆: This work was supported by the Bundesministerium für Forschung und Technologie.

¹

We would like to thank many colleagues for their help which made this experiment possible: Dr. Niels Doble and his colleagues for their construction of a very special neutron beam; Dr. H. Wind for his help with fast software for the neutron vertex reconstruction; we also acknowledge valuable support given by Prof. I.V. Chuvilo.

When running the experiment we enjoyed the support of the SPS Operations Group.

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Measurement of np elastic scattering at high energies and very small momentum transfers☆

Abstract

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