$\pi \Xi$ phase shifts and CP Violation in $\Omega \to \pi \Xi$ Decay

Abstract

In the study of CP violation signals in $\text{O}\to \pi \Xi$ nonleptonic decays, the strong $J$=3/2 $P$ and $D$ phase shifts for the $\pi \Xi$ final-state interactions are needed. These phases are calculated using an effective Lagrangian model, including $\Xi$, ${\Xi }^{\ast }$(1530), $\rho$ and the $\sigma$-term, in the intermediate states. The $\sigma$-term is calculated in terms of the scalar form factor of the baryon.

Comments: 6 pages, 2 figures