Jet Production in Photon-photon Interactions

We present results on jet production in γγ interactions where both photons are quasi-real. The invariant masses of the hadronnic system are limited to the range 4≦Wvis≦12 GeV/c2. The data approach the quark-Parton-Model (QPM) expectation at the highestpTjet values (≧4 GeV/c). Jet production at lowpT (≦1 GeV/c) can be described by a Vector Dominance derived model. The data also have a component with no apparent jet structure in the range, 1.0 ≦PTjet≦4.0 GeV/c which can be described by phase space or by models of the QCD hard scattering processes cesses

\gamma \gamma\to q\bar qg

and

\gamma \gamma\to q\bar qq\bar q

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: INELASTIC SCATTERING
INELASTIC SCATTERING: ELECTRON POSITRON
EXCHANGE: TWO-PHOTON
TWO-PHOTON: EXCHANGE
PHOTON PHOTON: INTERACTION
INTERACTION: PHOTON PHOTON
JET: ELECTROPRODUCTION
ELECTROPRODUCTION: JET

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