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Multiplicity moments in deep inelastic scattering at HERA
- Source :
- Physics Letters B, 510 (1-4), Physics Letters B, 510, 36-54. Elsevier
- Publication Year :
- 2002
-
Abstract
- Multiplicity moments of charged particles in deep inelastic E+P scattering have been measured with the ZEUS detector at HERA using an integrated luminosity of 38.4 pb^{-1}$. The moments for Q^2 > 1000 GeV^2 were studied in the current region of the Breit frame. The evolution of the moments was investigated as a function of restricted regions in polar angle and, for the first time, both in the transverse momentum and in absolute momentum of final-state particles. Analytic perturbative QCD predictions in conjunction with the hypothesis of Local Parton-Hadron Duality (LPHD) reproduce the trends of the moments in polar-angle regions, although some discrepancies are observed. For the moments restricted either in transverse or absolute momentum, the analytic results combined with the LPHD hypothesis show considerable deviations from the measurements. The study indicates a large influence of the hadronisation stage on the multiplicity distributions in the restricted phase-space regions studied here, which is inconsistent with the expectations of the LPHD hypothesis.<br />19 pages, 6 eps figures, submitted to Phys. Lett. B
- Subjects :
- Nuclear and High Energy Physics
Particle physics
HIGH-ENERGY
MONTE-CARLO GENERATOR
PHASE-SPACE BINS
FOS: Physical sciences
01 natural sciences
High Energy Physics - Experiment
STRANGE ATTRACTORS
Nuclear physics
QCD JETS
High Energy Physics - Experiment (hep-ex)
HADRON SPECTRA
0103 physical sciences
EVENT GENERATOR
GENERALIZED DIMENSIONS
Multiplicity (chemistry)
010306 general physics
QC
Event generator
Physics
Research Groups and Centres\Physics\Low Temperature Physics
010308 nuclear & particles physics
Scattering
Faculty of Science\Physics
Perturbative QCD
ZEUS
HERA
MULTIPARTON CORRELATIONS
PARTON DISTRIBUTIONS
Deep inelastic scattering
Charged particle
Transverse plane
High Energy Physics::Experiment
Subjects
Details
- Language :
- English
- ISSN :
- 03702693
- Database :
- OpenAIRE
- Journal :
- Physics Letters B, 510 (1-4), Physics Letters B, 510, 36-54. Elsevier
- Accession number :
- edsair.doi.dedup.....a2088faca4db38805c9e79abc4d1eea6