Speaker
Description
We have calculated differential cross sections of K−d → π−Λp and K−d → π0Λn reactions in order to study the difference between low energy Λp and Λn interactions. We can explore low-energy nature of ΛN interactions when we focus on the differential cross sections near the ΛN mass thresholds using the final-state ΛN interaction. The calculations have been performed for in-flight kaons with momenta of 1000 MeV/c. We have suppressed the background processes by imposing an angular restriction to forward directions on outgoing pions. This restriction also serves as the spin selection rule where the spin triplet state of ΛN interaction becomes dominant. TWe have employed chiral unitary amplitude obtained from partial wave analysis up to p-wave as meson-baryon amplitudes and the effective- range expansion, taking into account the spin-flip term, as baryon-baryon amplitudes.
