6533b854fe1ef96bd12afc2b

RESEARCH PRODUCT

QCD effects andb-tagging at LEP I

J. B. TauskStefano MorettiStefano Moretti

subject

QuarkQuantum chromodynamicsPhysicsNuclear physicsParticle physicsPhysics and Astronomy (miscellaneous)High Energy Physics::LatticeHigh Energy Physics::PhenomenologyHigh Energy Physics::ExperimentVariable (mathematics)Gluon

description

We analyze the impact of usingb-tagged samples in studying non-Abelian effects due to QCD ine + e − → 4jet events at √s=M z 0, using angular variable analyses and comparisons withe + e − → 3jetγ events. We find that QCD effects are largely enhanced inb-quark samples with respect to ‘unflavoured’ ones, where energy-ordering is used to distinguish between gluon and quark jets. We show that theb-quark mass influences the angular distributions significantly and should not be neglected.

https://doi.org/10.1007/bf02907447