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Combined Measurement and QCD Analysis of the Inclusive ep Scattering Cross Sections at HERA

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arxiv 0911.0884 v2 pith:XCJUL5LW submitted 2009-11-04 hep-ex

Combined Measurement and QCD Analysis of the Inclusive ep Scattering Cross Sections at HERA

classification hep-ex
keywords uncertaintiesanalysiscombinationcombinedcrossdataherainclusive
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A combination is presented of the inclusive deep inelastic cross sections measured by the H1 and ZEUS Collaborations in neutral and charged current unpolarised ep scattering at HERA during the period 1994-2000. The data span six orders of magnitude in negative four-momentum-transfer squared, Q^2, and in Bjorken x. The combination method used takes the correlations of systematic uncertainties into account, resulting in an improved accuracy. The combined data are the sole input in a NLO QCD analysis which determines a new set of parton distributions, HERAPDF1.0, with small experimental uncertainties. This set includes an estimate of the model and parametrisation uncertainties of the fit result.

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