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temperature of 10 K. All data were acquired at the same 10 K within five hours of exposing the fresh crystal surface. The chemical potential was referenced to a pure gold sample in electrical contact with the Bi2212 crystal. Photoemission spectra were recorded with a Scienta SES-2002 spectrometer with an overall energy resolution in the present experiment of 13 meV and a momentum resolution of .003 ˚ A − 1 at the photon energies used. 

ARPES spectra acquired at three locations along the Fermi surface are shown in Figure 1(a-c). The location of these cuts in the Brillouin zone is shown in the inset of Figure 2a. It has been shown previously that at a photon energy of 6 eV the antibonding band reflecting the bilayer splitting is entirely absent from the spectra $^{9}$. As discussed below the application of the Lucy-Richardson method (LRM) 10 reduces the broadening due to the instrumental resolution, thereby sharpening the spectra considerably. This is illustrated in figures 1 (d-f). Following such an analysis the effective energy resolution in the experiment was of the order of 5 meV and more importantly for these studies the effective momentum resolution was of 

