Photon Structure Function at Lep

Details Photon Structure Function at Lep Photon Structure Function at Lep

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005iche.conf..644k&link_type=abstract

HIGH ENERGY PHYSICS, ICHEP 2004. Proceedings of the 32nd International Conference. Held 16-22 August 2004 in Beijing, China. Edi

Physics

High Energy Physics

Scientific paper

With the reaction e+e- → e+e-γ*γ→ e+e-hadrons, LEP experiments have measured the hadronic photon structure function F2γ in a wide Q2 and x range. Despite the good statistical precision and the small background contamination, the measurements are affected by uncertainties of the order of 20-30% due to Monte Carlo corrections limited by the poor knowledge of the hadronic shape of two-photon events. A consistent value of αs is obtained by global fits to all F2γ measurements, with a precision similar to other αs determinations at LEP.

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