We calculate the cross section for e⁺e^- annihilation into three jets for massive quarks at next-to-leading order in perturbative QCD, both on and off the Z resonance. Our computation allows the implementation of any jet clustering algorithm. We give results for the three-jet cross section involving b quarks for the JADE and Durham algorithms at c.m. energies √s0ex0ex=0ex0exmZ. We also discuss a three-jet observable that is sensitive to the mass of the b quark.
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Bernreuther et al. (1997) studied this question.
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