Weak mixing and CP violation involving heavy quarks and possible measurements in e +e − experiments

Abstract

We evaluate weak mass mixing among the neutral heavy mesons with a bottom ( Q = − 1 3 ) or top (Q = + 2 3 ) quark and CP violation in the framework of six quark V − A models. It is argued that bottom and top mesons may distinguish the Higgs exchange mechanism of CP violation from a complex phase in the quark mass matrix, if bottom and top quark masses are sufficiently different. Estimates of weak mixing and CP violating effects for e +e − experiments at PETRA, PEP and CESR energies are presented.