Theoretical Optical Potential Derived from Chiral Potentials

Elastic scattering is probably the main event in the interactions of nucleons with nuclei. Even if this process has been extensively studied in the last years, a consistent description, i.e. starting from microscopic two- and many- body forces connected by the same symmetries and principles, is still under development. In this contribution we study the domain of applicability of mi- croscopic two-body chiral potentials in the construction of an optical potential. We basically follow the Kerman, McManus, and Thaler approach to build a mi- croscopic complex optical potential and then we perform some test calculations on 16 O at different energies. Our conclusion is that a particular set of potentials with a Lippmann-Schwinger cutoff at relatively high energies (above 500 MeV) has the best performances reproducing the scattering observables. Our work shows that building an optical potential within Chiral Perturbation Theory is a promising approach to the description of elastic proton scattering, in particular, in view of the future inclusion of many-body forces that naturally arise in such framework.