Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Near threshold enhancement of the pp̅ mass spectrum in J/Ψ decay
Other Titles: Near threshold enhancement of the P anti-P mass spectrum in J/psi decay
Author: Sibirtsev, A.
Haidenbauer, J.
Krewald, S.
Meissner, U.
Thomas, A.
Citation: Physical Review D: Particles, Fields, Gravitation and Cosmology, 2005; 71(5):054010-1-054010-9
Publisher: American Physical Soc
Issue Date: 2005
ISSN: 1550-7998
Statement of
A. Sibirtsev, J. Haidenbauer, S. Krewald, Ulf-G. Meißner and A.W. Thomas
Abstract: We investigate the nature of the near-threshold enhancement in the pp̅ invariant-mass spectrum of the reaction J/Ψ→γpp̅ reported recently by the BES Collaboration. Using the Jülich NN̅ model we show that the mass dependence of the pp̅ spectrum close to the threshold can be reproduced by the S-wave pp̅ final state interaction in the isospin I=1 state within the Watson-Migdal approach. However, because of our poor knowledge of the NN̅ interaction near-threshold and of the J/Ψ→γpp̅ reaction mechanism and in view of the controversal situation in the decay J/Ψ→π0pp̅ , where no obvious signs of a pp̅ final state interaction are seen, explanations other than final state interactions cannot be ruled out at the present stage.
Keywords: High Energy Physics - Phenomenology (hep-ph)
Nuclear Theory (nucl-th)
Rights: ©2005 American Physical Society
DOI: 10.1103/PhysRevD.71.054010
Published version:
Appears in Collections:Aurora harvest
Chemistry and Physics publications

Files in This Item:
File Description SizeFormat 
hdl_58068.pdfPublished version216.27 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.