On the true nature of transfer reactions leading to the complete fusion   of projectile and target
  The transfer of nucleons in hot-fusion reactions occurs within 0.17 yoctosecond, in a new state of nuclear matter. We suggest that the same state should show itself in an early stage of the phenomena occurring in nucleus-nucleus collisions realized at relativistic energies. 
G. Mouze and C. Ythier
nucl-ex