Gravitational decays of heavy quarks and leptons
Chkareuli Dzh. L.
Gravitational decays of hypothetical heavy quarks and leptons which are stable with respect to all other interactions are discussed. Composite quarks and leptons with "dimensions" ~ M~l (Mis the grand unified mass) and a mass on the order of Gf112 decay (into known quarks and leptons) at the rates of ordinary weak decays. The same mechanism generates composite-neutrino masses in the electron volt range.