Signals of non-standard physics in distributions of top-quark decay products at linear colliders

by Bohdan GRZADKOWSKI (University of Warsaw)

Friday 16 Jun 2000, 14:00 → 14:15 Europe/Zurich

TH Auditorium (CERN)

Angular and energy distributions for leptons and bottom quarks in the process e⁺e^- -> ttbar -> l±, bbbar ... will be presented assuming the most general top-quark couplings. The double distributions depend both on modification of the top-quark production and tbW decay vertices. However, the leptonic angular distribution turned out to be insensitive to non-standard parts of ^± vertex. The method of optimal observable will be used to estimate sensitivity of future measurements at linear e⁺e^- colliders to top-quark couplings. Tests of CP-violation in top-quark interactions will be discussed.