https://doi.org/10.1007/s100520200936
Experimental physics
Dijet photoproduction at HERA and the structure of the photon
Argonne National Laboratory, 60439-4815, Argonne, IL, USA
Received:
21
December
2001
Published online:
5
April
2002
The dijet cross section in photoproduction has been measured with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb
. The events were required to have a virtuality of the incoming photon, 
, of less than 1 GeV
and a photon-proton centre-of-mass energy in the range 
GeV. Each event contains at least two jets satisfying transverse-energy requirements of 
GeV and 
GeV and pseudorapidity requirements of \mbox{
}. The measurements are compared to next-to-leading-order QCD predictions. The data show particular sensitivity to the density of partons in the photon, allowing the validity of the current parameterisations to be tested.
© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica, 2002
