| Observation of Resonances in the Reaction (2007) | |||||||||||||
Abstract | |||||||||||||
| . Antiproton-proton annihilation into ß 0 jj has been studied with the Crystal Barrel spectrometer at CERN at an incident beam momentum of 1.94 GeV/c. The data were taken with a trigger requiring neutral final states. A new isovector state, the a2(1660) decaying to ß 0 j, is observed. In the jj invariant mass region around 2.1 GeV=c 2 , strong production of a heavy resonance is required, but our analysis does not distinguish between J P = 0 + , 2 + and 4 + . The production of the f0(1500) in reactions in flight is also observed. 1 Introduction This is the first of several papers which will concern ¯ pp!3ß 0 , 2ß 0 j, ß 0 jj and 3j using antiprotons in flight. The exper- a Now at Cornell University, Ithaca, USA b Now at University of Freiburg, Freiburg, Germany c University of Ljubljana, Ljubljana, Slovenia d University of Silesia, Katowice, Poland e Now at Andersen Consulting, Frankfurt, Germany f This work is part of the PhD. thesis of J. Ludemann g ... | |||||||||||||
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