Measurement of the Total Hadronic Cross-section in e+ee^+ e^- Annihilation at s=29\sqrt{s}=29-{GeV}

Collaboration
Mar, 1990
46 pages
Published in:
  • Phys.Rev.D 43 (1991) 34-45
Report number:
  • SLAC-PUB-5213,
  • LBL-28859
Experiments:
  • SLAC-PEP-005

Citations per year

19901999200820172024130
Abstract: (APS)
A precise measurement of the ratio R of the total cross section e+e−→hadrons to the pointlike cross section e+e−→μ+μ− at a center-of-mass energy of 29.0 GeV is presented. The data were taken with the upgraded Mark II detector at the SLAC storage ring PEP. The result is R=3.92±0.05±0.09. The luminosity has been determined with three independent luminosity monitors measuring Bhabha scattering at different angular intervals. Recent calculations of higher-order QED radiative corrections are used to estimate the systematic error due to missing higher-order radiative corrections in the Monte Carlo event generators.
  • electron positron: colliding beams
  • colliding beams: electron positron
  • electron positron: annihilation
  • annihilation: electron positron
  • hadron: electroproduction
  • electroproduction: hadron
  • cross section: hadronic
  • luminosity
  • quantum electrodynamics: radiative correction
  • model: fragmentation