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arxiv: hep-ph/0411218 · v1 · submitted 2004-11-16 · ✦ hep-ph

Antiproton-proton resonant like channels in J/Psi decays into photon, proton and antiproton

classification ✦ hep-ph
keywords antiprotondecaysnucleon-antinucleonphotonprotonresonantstatethreshold
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The BES collaboration has recently observed a strong enhancement close to the proton-antiproton threshold in the J/Psi decays into photon, proton and antiproton. Such a structure can be explained by a traditional nucleon-antinucleon model. The near threshold 1S0 bound state and/or the well-established 3P0 resonant state found in this nucleon-antinucleon interaction can adequately describe the BES data.

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