Near threshold p anti-p enhancement in B and J/psi decay

Haidenbauer, J.; Sibirtsev, A.; Meissner, U.G.

doi:10.1103/PhysRevD.74.017501

Journal Article

PreJuSER-54715

Near threshold p anti-p enhancement in B and J/psi decay

Haidenbauer, J.FZJ* ; Sibirtsev, A.FZJ* ; Meissner, U. G.FZJ*

2006
Soc. [S.l.]

Physical review / D 74(1), 017501 (2006) [10.1103/PhysRevD.74.017501]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10576 doi:10.1103/PhysRevD.74.017501

Abstract: 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.

Keyword(s): B+: hadronic decay ; p: pair production ; threshold ; mass spectrum: enhancement ; J/psi(3100): radiative decay ; eta(958) ; anti-p p: final-state interaction ; numerical calculations ; B+ --> p anti-p K+ ; J/psi(3100) --> p anti-p photon ; J/psi(3100) --> eta(958) pi+ pi- photon