Heavy Quarks ande+e−Annihilation

Abstract

The effects of new, heavy quarks are examined in a colored quark-gluon model. The $e^{+}{e}^{-}$ total cross section scales for energies far above any quark mass. However, it is much greater than the scaling prediction in a domain about the nominal two-heavy-quark threshold, despite ${\sigma }_{e^{+}{e}^{-}}$ being a weak-coupling problem above 2 GeV. We expect spikes at the low end of this domain and a broad enhancement at the upper end.