PS04 Hard QCD
Studies of two-photon collisions at LEP2
Department of Physics, Purdue University, 525. Northwestern Avenue, West Lafayette, Indiana, 47907-2036, USA
Accepted: 7 January 2004
Published online: 13 February 2004
A review of the recent experimental results on two-photon physics at LEP2 is presented. Differential cross-sections are measured for double-tagged hadronic γ γ events by the ALEPH and OPAL collaborations. Single particle inclusive differential cross-sections are measured by the L3 experiment at center-of-mass energies between 189 GeV and 202 GeV. For the first time at LEP the production of prompt photons is studied in the collision of quasi-real photons using data taken by the OPAL experiment at LEP2 energies.
© Società Italiana di Fisica, Springer-Verlag, 2004