Eur. Phys. J. C (2004) 37: 405-419
https://doi.org/10.1140/epjc/s2004-01990-2Determination of the
https://doi.org/10.1140/epjc/s2004-01990-2
experimental physics
Determination of the 
cross-section at LEP 2
A test of the benchmark QED process is reported, using the data collected with the DELPHI detector at LEP 2. The data analysed were recorded at centre-of-mass energies ranging from 161 GeV to 208 GeV and correspond to a total integrated luminosity of 656.4 pb-1. The Born cross-section for the process was determined, confirming the validity of QED at the highest energies ever attained in electron-positron collisions. Lower limits on the parameters of a number of possible deviations from QED, predicted within theoretical frameworks expressing physics beyond the Standard Model, were derived.
© Springer-Verlag, 2004
