منابع مشابه
A QCD analysis of diffractive deep-inelastic scattering data
We perform a novel type of analysis of diffractive deep-inelastic scattering data, in which the input parton distributions of the Pomeron are parameterised using the perturbative QCD expressions. In particular, we treat individually the components of the Pomeron of different size. We are able to describe simultaneously both the recent ZEUS and H1 diffractive data. In addition to the usual two-g...
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We perform a NLO QCD analysis of deep-inelastic scattering data, in which we account for absorptive corrections. These corrections are determined from a simultaneous analysis of diffractive deep-inelastic data. The absorptive effects are found to enhance the size of the gluon distribution at small x, such that a negative input gluon distribution at Q2 = 1 GeV2 is no longer required. We discuss ...
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Next-to-leading-order QCD analyses of the ZEUS data on deep inelastic scattering together with fixed-target data have been performed, from which the gluon and quark densities of the proton and the value of the strong coupling constant, αs(MZ), were extracted. The study includes a full treatment of the experimental systematic uncertainties including point-to-point correlations. The resulting unc...
متن کاملQCD fits to ZEUS and fixed target structure function data
Preliminary results are presented on the gluon density at low x obtained from a QCD analysis of ZEUS 1994 F 2 structure function data combined with those from NMC. Also given are estimates of the experimental error on the e + p NC Born cross section at large x and Q 2. This estimate is obtained from propagation of the statistical and systematic errors on fixed target structure functions.
متن کاملAn NLO QCD analysis of inclusive cross-section and jet-production data from the ZEUS experiment
The ZEUS inclusive differential cross-section data from HERA, for charged and neutral current processes taken with e and e beams, together with differential cross-section data on inclusive jet production in ep scattering and dijet production in γp scattering, have been used in a new NLO QCD analysis to extract the parton distribution functions of the proton. The input of jet-production data con...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2010
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2010.01.014