Direct Photoproduction of Jets in the KT Factorisation Prescription

Abstract

We study the cross section for dijet production via direct photons, as seen at the HERA collider. Rather than assuming the standard factorisation formula for the cross section (where the incoming partons are assumed to be on-shell), we use the $k_T$-factorisation formula. This formalism ought to be more appropriate for jet production in regions where the cross section is sensitive to the small-$x$ parton distribution functions. We study the rapidity distribution and the azimuthal angular distribution of the jets and compare with the traditional approach. Our calculations reveal a breakdown of the traditional approach as one moves into the regime of small $x$.

8 pages report no. RAL-94-028

References in corpus (1)

• Determining the Gluon Distributions in the Proton and Photon from Two-Jet Production at HERA

Cited by in corpus (14)

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• Inclusive Dijet Production at Low Bjorken-x in Deep Inelastic Scattering
• Resolved Photon Processes
• Analytic Approach to Small-X Structure Functions
• Nonlinear kT factorization for Forward Dijets in DIS off Nuclei in the Saturation Regime
• Mapping the proton unintegrated gluon distribution in dijets correlations in real and virtual photoproduction at HERA
• Dijet Production at HERA as a Probe of BFKL Dynamics
• Charm quark-antiquark correlations in photon-proton scattering
• Why Breakup of Photons and Pions into Forward Dijets Is so Different: Predictions from Nonlinear Nuclear k_t-factorization
• Predictions for dijet production in DIS using small x dynamics
• Deep inelastic events containing a forward photon as a probe of small $x$ dynamics
• Deep inelastic events containing two forward jets at HERA