Measurement of prompt photon production in hadronic Z decays

UNSPECIFIED (1993) Measurement of prompt photon production in hadronic Z decays. Zeitschrift für Physik C Particles and Fields, 57 (1). pp. 17-35. ISSN 0170-9739

Abstract

The production of isolated photons in hadronicZ decays is measured with the ALEPH detector at LEP using a sample of 450 000 hadronic events. The corrected rate is given for several values of the minimum invariant mass squared cut between the photon and the jets. This measurement of final state radiation from the quarks is compared with the predictions of parton shower models JETSET, ARIADNE and HERWIG as well as with the predictions of QCD matrix element calculations.