Dispersive contribution to CP violation in hyperon decays

Abstract

Within the standard model, CP-violating asymmetries A(Λ^0_-) and A(Ξ^-_-) 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.

10 pages, LaTeX

References in corpus (4)

• Strong $\Lambda \pi$ Phase Shifts for CP Violation in Weak $\Xi \to \Lambda \pi$ Decay
• CP Violation in $Lambda\to p{\pi }^{-}$ Beyond the Standard Model
• Weak Hyperon Decays: Quark Sea and SU(3) Symmetry Breaking
• Are "Penguins" Black-and-White?