This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevD.91.074003 in citations.
Please use the identifier: http://hdl.handle.net/2128/11123 in citations.
Near-threshold p ¯ p invariant mass spectrum measured in J / ψ and ψ ′ decays
Near-threshold p ¯ p invariant mass spectrum measured in J / ψ and ψ ′ decays
A systematic analysis of the near-threshold enhancement in the p¯p invariant mass spectrum seen in the decay reactions J/ψ→xp¯p and ψ(3686)→xp¯p (x=γ,ω,ρ,π,η) is presented. The enhancement is assumed to be due to the N¯N final-state interaction (FSI) and the pertinent FSI effects are evaluated in an...
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Personal Name(s): | Kang, Xian-Wei |
---|---|
Haidenbauer, Johann (Corresponding author) / Meißner, Ulf-G. | |
Contributing Institute: |
Institut 3 (Theoretische Kernphysik); IKP-3 Theorie der Starken Wechselwirkung; IAS-4 |
Published in: | Physical Review D Physical review / D, 91 91 (2015 2015) 7 7, S. 074003 074003 |
Imprint: |
[S.l.]
Soc.
2015
2015-04-02 2015-04-01 |
DOI: |
10.1103/PhysRevD.91.074003 |
Document Type: |
Journal Article |
Research Program: |
Condensed Matter and Molecular Building Blocks Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/11123 in citations.
A systematic analysis of the near-threshold enhancement in the p¯p invariant mass spectrum seen in the decay reactions J/ψ→xp¯p and ψ(3686)→xp¯p (x=γ,ω,ρ,π,η) is presented. The enhancement is assumed to be due to the N¯N final-state interaction (FSI) and the pertinent FSI effects are evaluated in an approach that is based on the distorted-wave Born approximation. For the N¯N interaction a recent potential derived within chiral effective field theory and fitted to results of a partial-wave analysis of p¯p scattering data is considered and, in addition, an older phenomenological model constructed by the Jülich group. It is shown that the near-threshold spectrum observed in various decay reactions can be reproduced simultaneously and consistently by our treatment of the p¯p FSI. It turns out that the interaction in the isospin-1 S10 channel required for the description of the J/ψ→γp¯p decay predicts a N¯N bound state. |