Authors

Document Type

Article

Publication Date

7-30-2007

Abstract

The production of energetic neutrons in ep collisions has been studied with the ZEUS detector at HERA. The neutron energy and pT2 distributions were measured with a forward neutron calorimeter and tracker in a 40 pb-1 sample of inclusive deep inelastic scattering (DIS) data and a 6 pb-1 sample of photoproduction data. The neutron yield in photoproduction is suppressed relative to DIS for the lower neutron energies and the neutrons have a steeper pT2 distribution, consistent with the expectation from absorption models. The distributions are compared to HERA measurements of leading protons. The neutron energy and transverse-momentum distributions in DIS are compared to Monte Carlo simulations and to the predictions of particle exchange models. Models of pion exchange incorporating absorption and additional secondary meson exchanges give a good description of the data. © 2007 Elsevier B.V. All rights reserved.

Journal Title

Nuclear Physics B

Volume

776

Issue

1-2

First Page

1

Last Page

37

DOI

https://doi.org/10.1016/j.nuclphysb.2007.03.045

First Department

Physics

Acknowledgements

Retrieved March 3, 2021 from https://arxiv.org/pdf/hep-ex/0702028.pdf

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