0000000000696870

AUTHOR

T Kussmaul

showing 1 related works from this author

DETERMINATION OF ALPHA-S FROM THE SCALING VIOLATION IN THE FRAGMENTATION FUNCTIONS IN E+E- ANNIHILATION

1993

A determination of the hadronic fragmentation functions of the Z0 boson is presented from a study of the inclusive hadron production with the DELPHI detector at LEP. These fragmentation functions were compared with the ones at lower energies, thus covering data in a large kinematic range: 196 less-than-or-equal-to Q2 less-than-or-equal-to 8312 GeV2 and x (= p(h)/E(beam)) > 0.08. A large scaling violation was observed, which was used to extract the strong coupling constant in second order QCD: alpha(s)(M(Z)) = 0.118 +/- 0.005. The corresponding QCD scale for five quark flavours is: LAMBDA(MS)(5)BAR = 230 +/- 60 MeV.

QuarkNuclear and High Energy PhysicsParticle physicsHADRONIC-Z-DECAYS; JET PRODUCTION-RATES; LUND MONTE-CARLO; LEADING ORDER; QUANTUM CHROMODYNAMICS; PERTURBATIVE QCD; PARTON DENSITIES; RESONANCE; SCATTERING; PHYSICSLUND MONTE-CARLOHigh Energy Physics::LatticeElectron–positron annihilationHadronElementary particlePARTON DENSITIES01 natural sciencesNuclear physicsPHYSICS0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]PERTURBATIVE QCDSCATTERING010306 general physicsNuclear ExperimentBosonQuantum chromodynamicsPhysicsCoupling constantAnnihilationQUANTUM CHROMODYNAMICS010308 nuclear & particles physicsJET PRODUCTION-RATESLEADING ORDERHigh Energy Physics::PhenomenologyRESONANCEFísica nuclearHigh Energy Physics::ExperimentParticle Physics - ExperimentHADRONIC-Z-DECAYSPHYSICS LETTERS B
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