  We made the first attempt to understand the observed unusual t dependence of
single-spin asymmetry observed in the HJET experiment at RHIC. Usually, the
interaction of hadrons is presented as a long-range Coulomb interaction and a
short-range strong interaction with Coulomb corrections. Such a division gives
rise to a Coulomb phase of the hadronic term. Conversely, here we consider
short-range hadronic interaction as a correction to the long-range
electromagnetic term, i.e., we treat it as an absorptive correction. This
significantly affects the Coulomb-nuclear interference, which is a source of
single-spin azimuthal asymmetry at small angles.
