학술논문

Measurement of the total hadronic cross section in e+e- annihilation at s=29 GeV
Document Type
article
Source
Physical Review D. 43(1)
Subject
Nuclear and Plasma Physics
Particle and High Energy Physics
Mathematical Physics
Mathematical Sciences
Physical Sciences
Astronomical and Space Sciences
Atomic
Molecular
Nuclear
Particle and Plasma Physics
Quantum Physics
Nuclear & Particles Physics
Mathematical physics
Astronomical sciences
Particle and high energy physics
Language
Abstract
A precise measurement of the ratio R of the total cross section e+e-hadrons to the pointlike cross section e+e-+- 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=3.920.050.09. 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. © 1991 The American Physical Society.