From protons to pentaquarks

by Eberhard Klempt (University of Bonn, Germany)

Tuesday 2 Dec 2003, 16:30 → 17:30 Europe/Zurich

503/1-001 - Council Chamber (CERN)

In recent months, a new particle was discovered having a minimal quark configuration (u,u,d,d,sbar), a mass of 1540 MeV and a narrow width (<20 MeV). Strikingly, a particle with these properties was predicted within the Skyrme model. Several experiments at SPRING-8 (Japan), DIANA (Moscow), CLAS (USA), SAPHIR (Bonn), and a re-analysis of neutrino-induced interactions reported evidence for this state. The Skyrme model also predicts states with a minimum quark content (d,d,s,s,ubar), which is seen as narrow peak at NA49 (CERN). The evidence for these observations will be reviewed and implications will be discussed.

Organiser(s): Rolf Landua / EP Division

Note: Tea & coffee will be served at 16.00 hrs.
Please note unusual room.