Minimal spin deflection of Kerr-Newman and supersymmetric black hole

A bstract Recent studies have shown that minimal couplings for massive spinning particles, which in the classical limit reproduce the leading PM Kerr black hole dynamics, leads to an eikonal S-matrix exhibiting spin-entanglement suppression. In this paper we trace this phenomenon to the suppression of spin-flipping components in the S-matrix, known to be the hallmark of minimal coupling in the ultra-relativistic limit. We further generalize the consideration to charged and N N = 4 blackholes, demonstrating that in both cases maximal suppression occurs at the extremal limit.