3,751 research outputs found

    HepSim: a repository with predictions for high-energy physics experiments

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    A file repository for calculations of cross sections and kinematic distributions using Monte Carlo generators for high-energy collisions is discussed. The repository is used to facilitate effective preservation and archiving of data from theoretical calculations, as well as for comparisons with experimental data. The HepSim data library is publicly accessible and includes a number of Monte Carlo event samples with Standard Model predictions for current and future experiments. The HepSim project includes a software package to automate the process of downloading and viewing online Monte Carlo event samples. A data streaming over a network for end-user analysis is discussed.Comment: 12 pages, 2 figure

    Long-Range Correlations in Deep-Inelastic Scattering

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    Multiplicity correlations between the current and target regions of the Breit frame in deep-inelastic scattering processes are studied. It is shown that the correlations are sensitive to the first-order perturbative QCD effects and can be used to extract the behavior of the boson-gluon fusion rates as a function of the Bjorken variable. The behavior of the correlations is derived analytically and analyzed using a Monte Carlo simulation.Comment: 16 pages, 5 figures, preprint ANL-HEP-PR-98-46 (accepted by J. Phys. G

    Angular Intermittency and Analytical QCD Predictions

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    We present a comparison of local multiplicity fluctuations in angular phase-space intervals with first-order QCD predictions. The data are based on 810k hadronic events at 91.2 GeV collected with the L3 detector at LEP during 1994.Comment: 4 pages, LaTeX, 1 eps figure Presented at 32th Rencontres de Moriond, ``QCD and High Energy Hadronic Interactions'' Les Arcs, France, 199

    Multiparticle Clusters and Intermittent Fluctuations

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    An approach for understanding the behavior of multiplicity distributions in restricted phase-space intervals derived on the basis of global observables is proposed. We obtain a unifying connection between local multiparticle clusters and the scale-invariant power-law behavior of normalized factorial moments. The model can be used to describe multiparticle processes in terms of a decomposition of the observed intermittent signal into contributions from clusters with varying number of particles.Comment: 13 pages, LaTeX, 3 figures, epsfig.sty, cite.sty, Presented at 5th Ann. Int. Seminar ``Non-Linear Phenomena in Complex Systems'' Minsk, Belarus, February 199
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