Back to Search
Start Over
Measurement of azimuthal asymmetries in neutral current deep inelastic scattering at HERA
- Source :
- The European physical journal / C 51, 289-299 (2007). doi:10.1140/epjc/s10052-007-0310-y, Red Report (2006).
- Publication Year :
- 2007
-
Abstract
- The distribution of the azimuthal angle of charged and neutral hadrons relative to the lepton plane has been studied for neutral current deep inelastic $ep$ scattering using an integrated luminosity of 45 pb-1 taken with the ZEUS detector at HERA. The measurements were made in the hadronic centre-of-mass system. The analysis exploits the energy-flow method, which allows the measurement to be made over a larger range of pseudorapidity compared to previous results. The dependence of the moments of the azimuthal distributions on the pseudorapidity and minimum transverse energy of the final-state hadrons are presented. Although the predictions from next-to-leading-order QCD describe the data better than do the Monte Carlo models incorporating leading-logarithm parton showers, they still fail to describe the magnitude of the asymmetries. This suggests that higher-order calculations may be necessary to describe these data.<br />10 pages, 4 figures, 4 tables
- Subjects :
- INCLUSIVE LEPTOPRODUCTION
Particle physics
MONTE-CARLO GENERATOR
Physics and Astronomy (miscellaneous)
HERA
ENERGY-FLOW
FOS: Physical sciences
Parton
01 natural sciences
High Energy Physics - Experiment
Nuclear physics
High Energy Physics - Experiment (hep-ex)
High Energy Physics
ZEUS Collaboration
DESIGN
0103 physical sciences
ddc:530
010306 general physics
Nuclear Experiment
Engineering (miscellaneous)
CENTRAL TRACKING DETECTOR
LEPTON-PROTON-SCATTERING
ZEUS BARREL CALORIMETER
PARTON DISTRIBUTIONS
GLOBAL ANALYSIS
CONSTRUCTION
Quantum chromodynamics
Physics
Neutral current
010308 nuclear & particles physics
Scattering
High Energy Physics::Phenomenology
Deep inelastic scattering
Pseudorapidity
High Energy Physics::Experiment
Lepton
Subjects
Details
- Language :
- English
- ISSN :
- 14346052 and 14346044
- Volume :
- 51
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- European Physical Journal C
- Accession number :
- edsair.doi.dedup.....0eff0f7cd4fec70ac0cae3ab83d7be7f