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Measurement of prompt photon production in hadronicZ decays

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Zeitschrift für Physik C Particles and Fields

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.

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  21. The parametery min is chosen such thaty min/y cut≦0.01

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Decceased.

Supported by CICYT, Spain

Supported by the National Science Foundation of China

Supported by the Danish Natural Science Research Council

Supported by the UK Science and Engineering Research Council

Supported by the US Department of Energy, contract DE-AC02-76ER 00881

Supported by the US Department of Energy, contract DE-FG05-87ER40319

Supported by the NSF, contract PHY-8451274

Supported by the US Department of Energy, contract DE-FC0S-85ER 250000

Supported by SLOAN fellowship, contract BR 2703

Supported by the Bundesministerium für Forschung und Technologie, Fed. Rep. of Germany

Supported by the Direction des Sciences de la Matière, C.E.A.

Supported by Fonds zur Förderung der wissenschaftlichen Forschung, Austria

Supported by the Korean Science and Engineering Foundation and Ministry of Education

Supported by the World Laboratory

Supported by the Consorzio per lo Sviluppo dell'Area di Ricerca, Trieste, Italy

Supported by the US Department of Energy, contract DE-FG03-92ER 40689

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ALEPH Collaboration., Buskulic, D., Decamp, D. et al. Measurement of prompt photon production in hadronicZ decays. Z. Phys. C - Particles and Fields 57, 17–35 (1993). https://doi.org/10.1007/BF01555735

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  • DOI: https://doi.org/10.1007/BF01555735

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