  By performing high resolution angle resolved photoemission spectroscopy
(ARPES) experiments on four different families of p-type cuprates, over an
energy range much bigger than investigated before, we report the discovery of a
universal high energy anomaly in the spectral function. This anomaly is
characterized by the presence of two new high energy scales $E_1= 0.35-0.45$eV
and $E_2=0.8-0.9$eV and the pinning of the main ARPES spectral function along
the boundary of a diamond in the momentum space. This anomaly unveils a missing
link between the doped oxygen holes and the quasiparticles, providing a full
range of relevant interaction to the high Tc problem.
