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arXiv · 1312.1539

Photoproduction of Isolated Photons, Inclusively and with a Jet, at HERA

ZEUS Collaboration
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Abstract

The photoproduction of isolated photons, both inclusive and together with a jet, has been measured with the ZEUS detector at HERA using an integrated luminosity of $374\, \mathrm{pb}^{-1}$. Differential cross sections are presented in the isolated-photon transverse-energy and pseudorapidity ranges $6 < E_T^γ< 15$ GeV and $-0.7 < η^γ< 0.9,$ and for jet transverse-energy and pseudorapidity ranges $4 < E_T^{jet} < 35$ GeV and $-1.5 < η^{jet} < 1.8,$ for exchanged-photon virtualities $Q^2 < 1$ GeV$^2$. Differential cross sections are also presented for inclusive isolated-photon production as functions of the transverse energy and pseudorapidity of the photon. Higher-order theoretical calculations are compared to the results.

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ZEUS Collaboration. 2014-02-24. Photoproduction of Isolated Photons, Inclusively and with a Jet, at HERA. https://arxiv.org/abs/1312.1539

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