Binding Energy (eV) −0.08 −0.07 −0.06 −0.05 −0.04 −0.03 −0.02 −0.01 0 0.01 k$_{|}$$_{|}$ (Inverse Angstroms) Binding Energy (eV) 0.4 0.42 0.44 0.46 0.48 −0.08 −0.07 −0.06 −0.05 −0.04 −0.03 −0.02 −0.01 0 0.01 k$_{|}$$_{|}$ (Inverse Angstroms) 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 k$_{|}$$_{|}$ (Inverse Angstroms) 0.42 0.44 0.46 0.48 Max 0 c) b) a) d) e) f) FIG. 1. (Color online) False color intensity maps of the raw (panels a-c) and deconvolved (panels d-f) ARPES spectra. The color scaling is depicted at the top of panel c. The intensity scales of the raw spectra are normalized to those of their deconvolved counterparts. 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 3