Published October 1987 | Version v1
Journal article Metadata-only

A study of energy-energy correlations between 12 and 46.8 GeV c.m. energies

Creators

  • 1. Technische Hochschule Aachen (Germany, F.R.). Lehrstuhl fuer Experimentalphysik 1A und 1. Physikalisches Inst.
  • 2. Bonn Univ. (Germany, F.R.). Physikalisches Inst.
  • 3. Bristol Univ. (UK). H.H. Wills Physics Lab.
  • 4. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany, F.R.)
  • 5. Dortmund Univ. (Germany, F.R.). Inst. fuer Physik
  • 6. Hamburg Univ. (Germany, F.R.). 2. Inst. fuer Experimentalphysik
  • 7. Imperial Coll. of Science and Technology, London (UK). Dept. of Physics
  • 8. Universidad Autonoma de Madrid (Spain)
  • 9. Oxford Univ. (UK). Dept. of Nuclear Physics
  • 10. Queen Mary Coll., London (UK). Dept. of Physics
  • 11. Science and Engineering Research Council, Chilton (UK). Rutherford Appleton Lab.
  • 12. Siegen Univ. (Gesamthochschule) (Germany, F.R.). Fachbereich 7 - Physik
  • 13. Weizmann Inst. of Science, Rehovoth (Israel)
  • 14. Wisconsin Univ., Madison (USA). Dept. of Physics

Description

We present data on energy-energy correlations (EEC) and their related asymmetry (AEEC) in e+e- annihilation in the centre of mass energy range 12<W≤46.8 GeV. The energy and angular dependence of the EEC in the central region is well described by O(αs2) QCD plus a fragmentation term proportional to 1/√s. Bare O(αs2) QCD reproduces our data for the large angle region of the AEEC. Nonperturbative effects for the latter are estimated with the help of fragmentation models. From various analyses using different approximations, we find that values for Λ sub(anti Manti S) in the range 0.1-0.3 GeV give a good description of the data. We also compare analytical calculations in QCD for the EEC in the back-to-back region to our data. The theoretical predictions describe well both the angular and energy dependence of the data in the back-to-back region. (orig.)

Additional details

Publishing Information

Journal Title
Z. Phys., C
Journal Volume
36
Journal Issue
3
Series
Z. Phys., C.
Journal Page Range
349-361
ISSN
0170-9739
CODEN
ZPCFD

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
18097363
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANGULAR CORRELATION; ANGULAR DISTRIBUTION; ANNIHILATION; ASYMMETRY; ELECTRON-POSITRON INTERACTIONS; ENERGY DEPENDENCE; ENERGY SPECTRA; EXPERIMENTAL DATA; GEV RANGE 10-100; HADRONS; JET MODEL; LIMITING FRAGMENTATION; MULTIPLE PRODUCTION; QUANTUM CHROMODYNAMICS; SCALING LAWS
Descriptors DEC
CORRELATIONS; DATA; DISTRIBUTION; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; GEV RANGE; HYPOTHESIS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MATHEMATICAL MODELS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; QUANTUM FIELD THEORY; SPECTRA

Optional Information

Contract/Grant/Project number
Contract DE-AC02-76ER000881; Grant INT-8313994
Collaborations
TASSO Collaboration.