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B) Decay of Top Quarks and Final-State Interactions

We turn to decay processes of the top quark near threshold. The top quarks produced via $e^+e^- \to t\bar{t}$ in the threshold region will be highly polarized [3]. Therefore, the threshold region can be an ideal place for studying properties of the top quark through decay processes, using the highly polarized top quark sample.

ACFA Linear Collider Working Group