Measurement of αs from jet rates in deep inelastic scattering at HERA
Creators
- 1. Argonne National Laboratory, IL (United States)
Description
Jet production in deep inelastic scattering for 120<Q2<3600 GeV2 has been studied using data from an integrated luminosity of 3.2 pb-1 collected with the ZEUS detector at HERA. Jets are identified with the JADE algorithm. A cut on the angular distribution of parton emission in the γ-parton centre-of-mass system minimises the experimental and theoretical uncertainties in the determination of the jet rates. The jet rates, when compared to OMIKRON (αs2) perturbative QCD calculations, allow a precise determination of αs(Q) in three Q2-intervals. The values are consistent with a running of αs(Q), as expected from QCD. Extrapolating to Q=M(Z0) yields αs(MZ0)=0.117±0.005(stat)-0.005+0.004(systexp)±0. 007(systtheory). (orig.)
Availability note (English)
MF available from INIS under the Report Number.
Files
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Additional details
Publishing Information
- Imprint Pagination
- 23 p.
- ISSN
- 0418-9833
- Report number
- DESY--95-182
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 27011994
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; COUPLING CONSTANTS; DEEP INELASTIC SCATTERING; ELECTRON-PROTON INTERACTIONS; GEV RANGE 10-100; GEV RANGE 100-1000; JET MODEL; MULTIPLE PRODUCTION; PARTONS; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; STRONG INTERACTIONS
- Descriptors DEC
- BASIC INTERACTIONS; DISTRIBUTION; ELECTRON-NUCLEON INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; GEV RANGE; INELASTIC SCATTERING; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; MATHEMATICAL MODELS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SCATTERING
Optional Information
- Collaborations
- ZEUS Collaboration.