A relation between the resonance neutron peak and ARPES data in cuprates

We argue that the resonant peak observed in neutron scattering experiments on superconducting cuprates and the peak/dip/hump features observed in ARPE S measurements are by-products of the same physical phenomenon. Both are du e to feedback effects on the damping of spin fluctuations in a d-wave super conductor. We solve a set of coupled integral equations for fermionic and b osonic propagators, and show that the dynamical spin susceptibility below T -c possesses the resonance peak at Omega(res) proportional to xi(-1). The s cattering of these magnetic excitations by electrons gives rise to a peak/d ip/hump behavior of the electronic spectral function, the peak-dip separati on is exactly Omega(res).