0000000000299847

AUTHOR

P. H. Heusse

showing 2 related works from this author

Measurement of Z-pair production in e(+)e(-) collisions and constraints on anomalous neutral gauge couplings

2009

The ZZ production cross section is measured from a data sample corresponding to a total integrated luminosity of 452 pb−1, collected by the ALEPH experiment at LEP at centre-of-mass energies from 192 to 209 GeV. Individual cross sections, extracted at six centre-of-mass energies, are found to be in agreement with Standard Model calculations. The results are used to set limits on anomalous neutral gauge couplings. The ZZ production cross section is measured from a data sample corresponding to a total integrated luminosity of 452 pb−1 , collected by the ALEPH experiment at LEP at centre-of-mass energies from 192 to 209 GeV. Individual cross sections, extracted at six centre-of-mass energies, …

PhysicsAlephParticle physicsNuclear and High Energy PhysicsLuminosity (scattering theory)e+-e- Experiments010308 nuclear & particles physicsElectron–positron annihilationSettore FIS/01 - Fisica SperimentaleGauge (firearms)01 natural sciencesStandard ModelNuclear physicsE +e -experiments; Nuclear and High Energy PhysicsE +e -experimentsCross section (physics)Pair production0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment010306 general physicsALEPH experimentParticle Physics - Experiment
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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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