Eur. Phys. J. C (2003) 31: 491-502
https://doi.org/10.1140/epjc/s2003-01359-1

experimental physics

Measurement of isolated prompt photon production in photon-photon collisions at -209 GeV

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 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 transverse momentum GeV and pseudorapidity is determined to be . Differential cross-sections are compared to the predictions of a next-to-leading-order (NLO) calculation.