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Forward Jet Production at HERA |
| Reference |
Hannes Jung, presented at ICHEP 2002, July 2002 |
| Document |
Conference paper
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| Figures |
(1)
(2)
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(4)
(5a)
(5b)
(6a)
(6b)
(7)
(5a-cas-new-nlo)
(5b-cas-new-nlo)
(6a-cas-new-nlo)
(6b-cas-new-nlo)
(7-cas-new-nlo)
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| Contact |
Martin Karlsson, Hannes Jung, Leif Jonsson |
| Abstract |
New parton dynamics, characterized by an initial state cascade which is non-ordered in parton virtuality, are expected to become important in the kinematic region of small Bjorken-x. Evidence for this feature of QCD is searched for by studying events with a forward jet produced close to the direction of the incoming proton in the angular range 7 < theta_jet < 20 degrees. The measurements are compared with the predictions of simulations assuming ordered or non-ordered emissions in the initial state cascade. The cross section for forward jet production is presented as a function of x_Bj, and shows a significant deviation to the predictions based on DGLAP evolution. We also present the forward jet cross section as a function of the energy fraction the forward jet takes from the initial proton, and as a function of the transverse momentum of the forward jet. |
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