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Observation of events with an energetic forward neutron in deep inelastic scattering at HERA

Journal article published in 1996 by Collaboration Zeus, A. vanSighem, M. Derrick, D. Krakauer, R. vanWoudenberg, S. Magill, D. Mikunas, B. Musgrave, Okrasinski Jr, J. R. Okrasinski, J. Repond, R. Stanek, Rl L. Talaga, Gc C. Romeo, H. Zhang and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

In deep inelastic neutral current scattering of positrons and protons at the center of mass energy of 300 GeV, we observe, with the ZEUS detector, events with a high energy neutron produced at very small scattering angles with respect to the proton direction. The events constitute a fixed fraction of the deep inelastic, neutral current event sample independent of Bjorken x and Q2 in the range 3 · 10−4 < xBJ < 6 · 10−3 and 10 < Q2 < 100 GeV2.