The differential cross sections for e+e- →e+e- and e+e- →γγ have been measured at the highest energy of in e+e- collisions. The process e+e- is well understood within the framework of the standard model of electroweak interactions. The reaction e+e- →γγ is found to be in good agreement with QED. The 95% confidence limits obtained for the QED cut-off parameters are Λ+61 GeV and Λ_>72GeV for e+e- →γγ.
ASJC Scopus subject areas
- General Physics and Astronomy