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photon+jet process application for setting the absolute jet energy and determining the gluon distribution at the Tevatron Run II | | D.V. Bandurin
; N.B. Skachkov
; | | Date: |
2 Mar 2002 | | Subject: | hep-ex | | Abstract: | We study the effect of application of new set of cuts, proposed in our previous works, on the improvement of accuracy of the jet energy calibration with p p->photon+Jet+X process at Tevatron. Monte Carlo events produced by the PYTHIA 5.7 generator are used for this aim. The selection criteria for photon+Jet event samples that would provide a good balance of photon and jet transverse momenta and would allow to reduce the background are described. The distributions of these events over photon transverse momenta and jet pseudorapidity are presented. The features of photon+Jet events in the central calorimeter region of the D0 detector (eta_jet < 0.7) are exposed. The efficiency of the cuts used for background suppression is demonstrated. It is shown that the samples of photon+Jet events, gained with the cuts for the jet energy calibration, may have enough statistics for determining the gluon distribution inside a proton in the region of x < 10^{-3} and of Q^2 by one order higher than that studied at HERA. | | Source: | arXiv, hep-ex/0203003 | | Services: | Forum | Review | PDF | Favorites | |
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