Measurement of the Hadronic Cross Section of Double Tagged γγ Events at Aleph
Abstract
The interaction of virtual photons has been investigated using double tagged γ*γ*-events with hadronic final states, taken by the ALEPH experiment at e+e- center-of-mass energies √ {see} = 189 - 208\ Gev. The measured cross section is compared to the PYTHIA and the PHOT02 Monte Carlo Model, a NLO QCD calculation and BFKL calculations. The NLO QCD prediction is largely consistent with the data. The LO-BFKL predictions are ruled out by the data while NLO-BFKL calculations are in resonable agreement with the measurement.
- Publication:
-
Photon 2001
- Pub Date:
- July 2002
- DOI:
- 10.1142/9789812777157_0032
- Bibcode:
- 2002phot.conf..166P