Dispersive contribution to CP violation in hyperon decays

Abstract

Within the standard model, CP-violating asymmetries A(\Lambda^0_-) and A(\Xi^-_-) have been estimated in short-distance calculations to occur at the level of a few times 10^{-5}. We show here that in this model the dispersive contribution tends to give asymmetries of similar size.

Comments: 10 pages, LaTeX