0000000001138799

AUTHOR

D Rakoczy

showing 2 related works from this author

The Scale Dependence of the Hadron Multiplicity in Quark and Gluon Jets and a Precise Determination of $C_{A}/C_{F}$

1999

\frac{C_A}{C_F} = 2.246 \pm 0.062~(stat.) \pm 0.080~(syst.) \pm 0.095~(theo.) Data collected at the Z resonance using the DELPHI detector at LEP are used to determine the charged hadron multiplicity in gluon and quark jets as a function of a transverse momentum-like scale. The colour factor ratio, \cacf, is directly observed in the increase of multiplicities with that scale. The smaller than expected multiplicity ratio in gluon to quark jets is understood by differences in the hadronization of the leading quark or gluon. From the dependence of the charged hadron multiplicity on the opening angle in symmetric three-jet events the colour factor ratio is measured to be: C_A/C_F = 2.246 \pm 0.0…

QuarkParticle physicsNuclear and High Energy PhysicsE+E ANNIHILATIONScale (ratio)High Energy Physics::LatticeHadronNuclear TheoryFOS: Physical sciences01 natural sciencesPartícules (Física nuclear)High Energy Physics - ExperimentEVENTSHigh Energy Physics - Experiment (hep-ex)MONTE-CARLO0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]DISTRIBUTIONSSPECTRA010306 general physicsNuclear ExperimentDELPHIPhysics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyResonanceMultiplicity (mathematics)LARGE ELECTRON POSITRON COLLIDERRATIOSHadronizationGluonPERTURBATIVE-QCDPARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHIPARTICLE PHYSICSAVERAGE MULTIPLICITIES; E+E ANNIHILATION; PERTURBATIVE-QCD; MONTE-CARLO; PARTICLE; FRAGMENTATION; DISTRIBUTIONS; SPECTRA; EVENTS; RATIOSFísica nuclearHigh Energy Physics::ExperimentFRAGMENTATIONPARTICLEParticle Physics - ExperimentAVERAGE MULTIPLICITIESPhysics Letters B
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Measurement of the charged particle multiplicity of weakly decaying B hadrons

1998

From the Z decays recorded in 1994 and 1995 by the DELPHI detector at LEP, the charged particle multiplicity of weakly decaying B hadrons was measured to be: 4.97 +/- 0.03 +/- 0.06 excluding the K-o and Lambda decay products. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

Nuclear and High Energy PhysicsParticle physicsElectron–positron annihilationHadronMICROVERTEX DETECTOR; DELPHI DETECTOR; PHYSICS01 natural sciencesPartícules (Física nuclear)Nuclear physicsPHYSICS0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Multiplicity (chemistry)010306 general physicsDELPHIPhysics010308 nuclear & particles physicsDetectorMICROVERTEX DETECTORDELPHI DETECTORLARGE ELECTRON POSITRON COLLIDERCharged particlePARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHIPARTICLE PHYSICSHigh Energy Physics::ExperimentFísica nuclearParticle Physics - Experiment
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