Photon Structure at LEP
The structure of the photon is studied in photon interactions at high energies using photons radiated by the electron and positron beams at LEP. The current status of these measurements is reviewed.
hep-ex↗
arXiv subjects
Stefan Soldner-Rembold
Publications and source records attributed to Stefan Soldner-Rembold.
Search for Single Leptoquark Production in Electron-Photon Scattering at 161 and 172 GeV
A search for a first generation scalar leptoquark (LQ) has been performed using the data collected by the OPAL detector in 1996 at e+e- centre-of-mass energies sqrt{s} of 161 and 172 GeV. It is assumed that a single leptoquark can be produced in the process eq->LQ, where the initial state quark originates from a hadronic fluctuation of a quasi-real photon which has been radiated by one of the LEP beams. Lower limits at the 95 % confidence level on the mass of a first generation scalar leptoquark of 131 GeV for beta=0.5 and beta=1, coupling values lambda larger than sqrt{4*pi*alpha_em) and leptoquark charges -1/3 or -5/3 are obtained.
hep-ex↗
Jet Production in Photon-Photon Interactions
The inclusive one- and two-jet cross-sections are measured in collisions of quasi-real photons at e+e- centre-of-mass energies of 130 and 136 GeV using the OPAL detector at LEP. Jets are reconstructed with a cone jet finding algorithm. The jet cross-sections are compared to next-to-leading order (NLO) perturbative QCD calculations. Transverse energy flows in jets are studied separately for direct and resolved two-photon events.
hep-ex↗