Measurement of the differential 2-jet rate with Jade and Durham for b-tagged and inclusive events. As a result the flavour independence of alpha_s is shown. See

Test of the Flavour Independence of alpha_s

Final (ps) (abstract)

some figures : html

ALEPH collaboration

Refs : QCD perturbatif, Heavy Flavours B-hadron production

CERN PPE/95-018

Physics Letters B 355 (1995) 381

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