Overview of Antikaon-Nuclear Theory and Phenomenology

Abstract

Experimental evidence for antikaon-nuclear quasibound states is briefly reviewed. Theoretical and phenomenological arguments for and against deep antikaon-nucleus potentials which might allow for narrow quasibound states are reviewed, with recent calculations suggesting widths larger than 100 MeV for binding energy smaller than 100 MeV. Results of RMF calculations that provide a lower limit of 50+/-10 MeV for the width of deeply bound states are discussed.Comment: Invited talk at the Yukawa International Symposium on New Frontiers in QCD, Kyoto University, December 2006. To be published in Progress of Theoretical Physics Supplemen