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Measurement of the total hadronic cross section in e sup + e minus annihilation at radical s =29 GeV

Journal Article · · Physical Review, D (Particles Fields); (USA)
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A precise measurement of the ratio {ital R} of the total cross section {ital e}{sup +}{ital e{minus}}{r arrow}hadrons to the pointlike cross section {ital e}{sup +}{ital e{minus}}{r arrow}{mu}{sup +}{mu}{sup {minus}} 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 {ital R}=3.92{plus minus}0.05{plus minus}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.

DOE Contract Number:
AC03-76SF00515
OSTI ID:
6053389
Journal Information:
Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 43:1; ISSN PRVDA; ISSN 0556-2821
Country of Publication:
United States
Language:
English

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Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BEAM LUMINOSITY
BHABHA SCATTERING
BOSONS
CORRECTIONS
COUPLING CONSTANTS
CROSS SECTIONS
ELASTIC SCATTERING
ELECTRODYNAMICS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GEV RANGE
GEV RANGE 10-100
HADRONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MATHEMATICAL MODELS
MONTE CARLO METHOD
MUONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
RADIATIVE CORRECTIONS
SCATTERING
STANDARD MODEL
TOTAL CROSS SECTIONS
UNIFIED GAUGE MODELS
Z NEUTRAL BOSONS