Speaker
Oleg Kuprash
(DESY)
Description
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 $6 < E_T^{\gamma} <
15$ GeV and $-0.7 < \eta^{\gamma} < 0.9$, and for jet
transverse-energy and pseudorapidity ranges $4 < E_T^{\rm jet} <
35$ GeV and $-1.5 < \eta^{\rm jet} < 1.8$, 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.
Primary author
Matthew Wing
(UCL)
