Elsevier

Nuclear Physics B

Volume 148, Issues 1–2, 12–19 February 1979, Pages 1-17
Nuclear Physics B

Neutron-proton differential cross sections in the range 70 to 400 GeV/c☆

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Abstract

We report the results of an experiment which measured np elastic scattering differential cross sections over a range in −t from 0.15 to ∼3.6 (GeV/c)2 for incident neutron momenta from 70 to 400 GeV/c. We find the logarithmic slope parameter, evaluated at −t = 0.2 (GeV/c)2, to be consistent with existing proton-proton parametrizations. The data exhibit a dip in the cross section near −t = 1.4 (GeV/c)2 for incident neutron momenta above 200 GeV/c. For neutron momenta less than 280 GeV/c, the neutron-proton cross sections are found to be higher than existing proton-proton data in the range 0.7 ⩽ −t ⩽ 1.3 (GeV/c)2 which is in contradiction to most Regge predictions.

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Cited by (0)

☆

Work supported by the National Science Foundation.

∗∗

Present address: Bell Telephone Laboratory, Whippany, NJ, USA.

∗∗∗

Present address: Department of Physics, University of Durham, Durham, England.

☆

Permanent address: Tata Institute for Fundamental Research, Bombay, India.

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