Diffractive production of dijets at HERA

Details Diffractive production of dijets at HERA Diffractive production of dijets at HERA

1994-07-29

arxiv.org/abs/hep-ph/9407399v2

Z.Phys.C66:181-194,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, uuencoded postscript file, DAMTP-94-60. Some comparison with work by other authors added (changes on page 12, in the

Scientific paper

10.1007/BF01496592

We investigate the production of a quark-antiquark pair in diffractive photon- proton scattering, approximating soft pomeron exchange by the exchange of two nonperturbative gluons. In deep inelastic scattering at HERA, events with two jets and the scattered proton in the final state are predicted to be observa- ble, with an important contribution from charm production. For photoproduction of light quark jets with high transverse momentum we find that both exchanged gluons must have a large invariant mass, so that the cross section is very small, whereas for charm quarks it is quite appreciable. From our calculation we also extract the quark structure function of the pomeron for the scaling variable $z$ no too close to 0 or 1, finding a strong flavour dependence and a behaviour somewhat harder than $z (1-z)$ for light quarks.

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