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Type: Conference paper
Title: Analysis of the p p-bar mass spectrum from J/psi decay
Author: Haidenbauer, J.
Krewald, S.
Meissner, U.
Sibirtsev, A.
Thomas, A.
Citation: Low Energy Antiproton Physics: Eighth International Conference on Low Energy Antiproton Physics (LEAP'05), held in Bonn, Germany 16-22 May 2005 / D. Grozonka, R. Czyzykiewicz, W. Oelert, T. Rozek and P. Winter (eds.): pp.137-140
Publisher: American Institute of Physics
Issue Date: 2005
Series/Report no.: AIP Conference Proceedings
ISBN: 0735402841
ISSN: 0094-243X
Conference Name: International Conference on Low Energy Antiproton Physics (8th : 2005 : Bonn-Julich, Germany)
Editor: Grzonka, D.
Czyzykiewicz, R.
Oelert, W.
Rozek, T.
Winter, P.
Statement of
J. Haidenbauer, S. Krewald, U.-G. Meißner, A. Sibirtsev and A.W. Thomas
Abstract: The near-threshold enhancement in the pp̄ invariant mass spectrum of the reaction J/→γpp̄, observed in an experiment by the BES Collaboration, is analysed. It is shown, within the Watson-Migdal approach to final state interactions, that the mass dependence of the pp̄ spectrum close to the threshold can be reproduced by the S-wave pp̄ interaction of the Jülich NN̄ model in the isospin I=1 state. Difficulties in the consistent interpretation of the pp̄ invariant mass spectrum of the reaction J/→π0pp̄, where there are no obvious signs for a final state interaction, are discussed. © 2005 American Institute of Physics.
Rights: ©2005 American Institute of Physics
DOI: 10.1063/1.2130150
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