Avraham Gal
Published 2006-07-30Version 1
Multiple-scattering approximations to Faddeev calculations of the K^- d scattering length are reviewed and compared with published Kbar-N-N <--> pi-Y-N fully reactive Faddeev calculations. A new multiple-scattering approximation which goes beyond the `fixed-center' assumption for the nucleons is proposed, aiming at accuracies of 5-10%. A precise value of the K^- d scattering length from the measurement of the K^- d 1s atomic level shift and width, planned by the DEAR/SIDDHARTA collaboration, plus a precise value for the K^- p scattering length by improving the K^- p atom measurements, are essential for extracting the K^- n scattering length, for resolving persistent puzzles in low-energy Kbar-N phenomenology and for extrapolating into Kbar-nuclear systems.
Comments: Invited talk at MESON 2006, Krakow, June 2006. To be published in International Journal of Modern Physics A. Requires use of ws-ijmpa.cls
Journal: Int.J.Mod.Phys. A22 (2007) 226-233
Three-Body approach to the K^- d Scattering Length in Particle Basis
Scale-(in)dependence in quantum 4-body scattering
First extraction of proton mass radius and scattering length $\left|α_{ρ^0 p}\right|$ from $ρ^0$ photoproduction
