Hyperon resonances in coupled channels and Crystal Ball data

✍ Scribed by D.M. Manley

• Book ID: 103865597
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 267 KB
• Volume: 754
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2005.01.010

✦ Synopsis

The known resonance parameters of the Λ and Σ hyperons were determined almost entirely from energy-dependent partial-wave analyses of KN scattering data. Some of these analyses attempted to obtain a consistent set of parameters for reactions involving different final states ( KN, πΛ, πΣ), but unitarity was not enforced and various features (e.g., backgrounds) were not treated consistently. Now that K -p → neutrals data are beginning to be published by the Crystal Ball Collaboration, it is timely to take a fresh look at the strangeness -1 hyperons. First results are presented for a new unitary, multichannel description of several KN reactions.