Abstract
We review the physics involved in the production and decay of top quarks in e+e- → tt̄ near threshold, with special emphasis on the recent theoretical study on the decay process of top quarks in the threshold region. The energy-angular distribution of l+ in semileptonic top decays is calculated including the full φ(α) corrections. Various effects of the final-state interactions are elucidated. A new observable is defined near threshold, which depends only on the decay of free polarized top quarks, and thus it can be calculated without bound-state effects or the final-state interactions.
| Original language | English |
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| Pages (from-to) | 2461-2478 |
| Number of pages | 18 |
| Journal | Acta Physica Polonica B |
| Volume | 28 |
| Issue number | 11 |
| Publication status | Published - 1997 |