0000000000549686

AUTHOR

Johnson Ro

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The forward-backward asymmetry for charm quarks at the Z pole

1995

From 1.4 million hadronic Z decays collected by the ALEPH detector at LEP, an enriched sample of Z --> c $$($) over bar c events is extracted by requiring the presence of a high momentum D*(+/-). The charm quark forward-backward charge asymmetry at the Z pole is measured to be A(FB)(0,c) = (8.0 +/- 2.4)% corresponding to an effective electroweak mixing angle of sin(2) theta(W)(eff) = 0.2302 +/- 0.0054.

PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsElectron–positron annihilationmedia_common.quotation_subjectPhysicsHigh Energy Physics::PhenomenologyHadronElectroweak interactionWeinberg angle01 natural sciencesAsymmetryCharm quarkMomentumNuclear physicsALEPH Experiment0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment010306 general physicsALEPH experimentParticle Physics - Experimentmedia_common
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