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Rare top quark decays in extended models

R. Gaitan, O. G. Miranda, L. G. Cabral-Rosetti

hep-pharXiv:hep-ph/0604170

Abstract

Flavor changing neutral currents (FCNC) decays t to H + c, t to Z + c, and H to t + barc are discussed in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions where FCNC decays may take place at tree-level and are only suppressed by the mixing between ordinary top and charm quarks, which is poorly constraint by current experimental values. The non-manifest case is also briefly discussed.

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