Measurement of Isolated Prompt Photon Production in Photon-Photon Collisions at sqrt(s)_ee=183-209 GeV
arXiv:hep-ex/0305075 · doi:10.1140/epjc/s2003-01359-1
Abstract
For the first time at LEP the production of prompt photons is studied in the collisions of quasi-real photons using the OPAL data taken at e+e- centre-of-mass energies between 183 GeV and 209 GeV. The total inclusive production cross-section for isolated prompt photons in the kinematic range of photon transverse momentum larger than 3.0 GeV and absolute photon pseudorapidity less than 1 is determined to be 0.32 +- 0.04 (stat) +- 0.04 (sys) pb. Differential cross-sections are compared to the predictions of a next-to-leading-order (NLO) calculation.
arXiv comment28 pages, 11 figures, Submitted to Eur. Phys. J C
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