Abstract
The production of energetic neutrons in ep collisions has been studied with the ZEUS detector at HERA. The neutron energy and 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 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.
| Original language | Undefined/Unknown |
|---|---|
| Pages (from-to) | 1-37 |
| Number of pages | 37 |
| Journal | Nuclear physics. Series B |
| Volume | 776 |
| Issue number | 1-2 |
| Publication status | Published - 2007 |