2006/10/12 by Salvatore Mele, Mele, Salvatore · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0610037
Invited talk at the XXVI Physics in Collisions Conference (PIC06), Buzios, Brasil, July 2006, 6 pages, LaTeX, 7 eps figures. PSN THUPL04
arxiv created 2006/10/12 · arxiv updated 2009/12/01
The study of Bhabha scattering at e+e- colliders probes the running of the electromagnetic coupling. After early measurements by the VENUS collaboration at TRISTAN and the by L3 collaboration at LEP, two recent analyses have been performed by the OPAL and L3 collaborations. The OPAL collaboration studied high-statistics low-angle Bhabha scattering at LEP, achieving a precise determination of the running of alpha in the region 1.8GeV2<-Q2<6.1GeV2. The L3 collaboration investigated high-energy large-angle Bhabha scattering to first probe the region 1800GeV2 < -Q2 < 21600GeV2. All measurements are described and a global overview of their agreement with QED predictions is given.