Abstract

The production of electrons by bottom and charm hadrons has been studied in e +e − annihilation at 34.6 GeV center of mass energy. It is observed that the b quark fragmentation function is peaked at large values of the scaling variable z with 〈 z b〉 = 0.84 +0.15 + 0.15 −0.10 − 0.11. For c quarks 〈 z c〉 = 0.57 +0.10 + 0.05 −0.09 − 0.06 is observed. A forward-backward charge asymmetry of A = −0.25 ± 0.22 was measured in b production.

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