Author: T. Fearnly

0000000000667644

AUTHOR

T. Fearnly

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An experimental study of γγ → hadrons at LEP

1993

An analysis of γγ interactions has been performed using untagged hadronic data obtained by the ALEPH detector at LEP. The data show at low transverse momentum (pt) are well reproduced by a model based on the vector meson dominance mechinism (VDM). At high pt thrust the presence of hard scattering processes is demonstrated. This component is well described in shape and normalization by a QCD calculation.

Quantum chromodynamicsPhysicsNormalization (statistics)Nuclear and High Energy PhysicsParticle physicsROSS-SECTIONE+E-PHYSICSScatteringHigh Energy Physics::PhenomenologyHadronElementary particleVector meson dominancePhoton structure functionJET FRAGMENTATIONNuclear physicsALEPH ExperimentPHOTONLUND MONTE-CARLOCSCATTERINGHigh Energy Physics::ExperimentALEPH experiment

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