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H1_1999_I504022

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High transverse momentum π0 mesons have been measured with the H1 detector at HERA in deep-inelastic ep scattering events at low Bjorken-x, down to x4105 .The measurement is performed in a region of small angles with respect to the proton remnant in the laboratory frame of reference, namely the forward region, and corresponds to central rapidity in the centre of mass system of the virtual photon and proton. This region is expected to be particularly sensitive to QCD effects in hadronic final states. Differential cross-sections for inclusive π0 meson production are presented as a function of Bjorken-x and the four-momentum transfer Q2, and as a function of transverse momentum and pseudorapidity.

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