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Comparison of Dijet Cross Sections vs Q^2 with Various Monte Carlo Models

N. Macdonald
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Abstract

The dijet cross section as a function of both the fraction of the photon momentum participating in the hard process, x_γ^{OBS}, and the photon's virtuality, Q^2, is compared with the predictions of Herwig 5.9 for various photon parton distribution functions. The ratio of dijet cross sections with x_γ^{OBS} < 0.75 and x_γ^{OBS} > 0.75 is measured as a function of Q^2. This ratio is found to decrease as Q^2 increases consistent with the hypothesis that the photon parton distribution functions decrease with increasing photon virtuality.

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N. Macdonald. 1999-11-30. Comparison of Dijet Cross Sections vs Q^2 with Various Monte Carlo Models. https://arxiv.org/abs/hep-ex/9911050

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