ppbar enhancement in B and J/Psi decay

Details ppbar enhancement in B and J/Psi decay ppbar enhancement in B and J/Psi decay

2006-05-11

arxiv.org/abs/hep-ph/0605127v1

Phys.Rev.D74:017501,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pp, 2 figs, uses revtex4

Scientific paper

10.1103/PhysRevD.74.017501

The near-threshold enhancement in the ppbar invariant mass spectrum from the B^+ -> K^+ ppbar decay reported recently by the BaBar Collaboration is studied within the J\"ulich NNbar model. We illustrate that the invariant mass dependence of the ppbar spectrum close to the threshold can be reproduced by the final state interactions. This explanation is in line with our previous analysis of the ppbar invariant mass spectrum from the J/Psi -> gamma ppbar 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 cautions in bringing this structure in connection with the enhancement found in the ppbar invariant mass spectrum or with the existence of NNbar bound states.

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