Analysis of the p p-bar mass spectrum from J/psi decay

Haidenbauer, J.; Krewald, S.; Meissner, U.; Sibirtsev, A.; Thomas, A.

Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/65829

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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 9780735402843
ISSN:	0094-243X 1551-7616
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 Responsibility:	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
Appears in Collections:	Aurora harvest Physics publications

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