3,628 research outputs found
HepSim: a repository with predictions for high-energy physics experiments
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
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
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
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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