Exclusive QCD predictions for proton-antiproton decay rates of 3D1-states charmonium states

R. W. Robinett, L. Weinkauf

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Using familiar methods of exclusive QCD, we derive the amplitude for the coupling of J=1 quarkonium D-states to proton-antiproton pairs. Including the 3D1 contribution, we then evaluate the Ψ′ →pp decay width and find that the |2 3S1〉-|1 3D1〉 mixing angle solution φ=-(28±2)° is favored by the observed Ψ′ decay rate. Using this solution, we then find that Γ(Ψ″→p p)/Γ(Ψ→pp) is in the range 0.07-0.31 depending on the assumed nucleon wavefunction.

Original languageEnglish (US)
Pages (from-to)231-236
Number of pages6
JournalPhysics Letters B
Issue number1-2
StatePublished - Nov 14 1991

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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