Observation of resonances in the reaction at 1.94
The CRYSTAL BARREL Collaboration
A. Abele 8 - et al.
8 Universität Karlsruhe, D-76021 Karlsruhe, Germany
Received: 19 July 1998 / Published online: 19 February 1999
Antiproton-proton annihilation into has been studied with the Crystal Barrel spectrometer at CERN at an incident beam momentum of 1.94GeV/c. The data were taken with a trigger requiring neutral final states. A new isovector state, the a2(1660) decaying to , is observed. In the invariant mass region around 2.1, strong production of a heavy resonance is required, but our analysis does not distinguish between JP = 0+, 2+ and 4+. The production of the f0(1500) in reactions in flight is also observed.