Td. Cohen et J. Milana, HEAVY-QUARK SYMMETRY AND PAIR PRODUCTION OF HEAVY MESONS - A PERTURBATIVE QCD ESTIMATE, Physics letters. Section B, 306(1-2), 1993, pp. 134-138
Physical and mathematical arguments are given which suggest that heavy
quark symmetry makes clear predictions for production of pairs of hea
vy mesons in e+ + e- annihilation. A pertubative QCD calculation is do
ne which explicitly demonstrates this result in the heavy quark limit.
However these calculations also suggest very large 1/M corrections fo
r realistic quark masses.