• Medientyp: E-Artikel
  • Titel: Near threshold p anti-p enhancement in B and J/psi decay
  • Beteiligte: Haidenbauer, J. [VerfasserIn]; Sibirtsev, A. [VerfasserIn]; Meissner, U.G. [VerfasserIn]
  • Erschienen: Soc., 2006
  • Erschienen in: Physical review / D 74(1), 017501 (2006). doi:10.1103/PhysRevD.74.017501
  • Sprache: Englisch
  • DOI: https://doi.org/10.1103/PhysRevD.74.017501
  • ISSN: 1550-7998
  • Schlagwörter: J/psi(3100) --> eta(958) pi+ pi- photon ; anti-p p: final-state interaction ; numerical calculations ; B+: hadronic decay ; J/psi(3100) --> p anti-p photon ; eta(958) ; threshold ; mass spectrum: enhancement ; J/psi(3100): radiative decay ; B+ --> p anti-p K+ ; p: pair production
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  • Beschreibung: The near-threshold enhancement in the p (N) over bar invariant mass spectrum from the B+-> K(+)p (N) over bar decay reported recently by the BABAR Collaboration is studied within the Julich N (N) over bar model. We illustrate that the invariant mass dependence of the p (N) over bar spectrum close to the threshold can be reproduced by the final state interactions. This explanation is in line with our previous analysis of the p (N) over bar invariant mass spectrum from the J/Psi ->gamma p (N) over bar decay measured by the BES Collaboration. We also comment on a structure found recently in the pi(+)pi(-)eta(') mass spectrum of the radiative J/Psi decay by the BES Collaboration. In particular we argue that one should be rather cautious in bringing this structure in connection with the enhancement found in the p (N) over bar invariant mass spectrum or with the existence of N (N) over bar bound states.
  • Zugangsstatus: Freier Zugang