Description: Near threshold p-pbar enhancement in the J/Psi to omega p-pbar decay

This title appears in the Scientific Report : 2008

Near threshold p-pbar enhancement in the J/Psi to omega p-pbar decay

The near-threshold behavior of the p (p) over bar invariant mass spectrum from the J / psi -> omega p (p) over bar decay reported recently by the BES Collaboration is analyzed. Our study demonstrates that there is indeed a clear enhancement in the p (p) over bar invariant mass spectrum near thres...

Personal Name(s):	Haidenbauer, J.
	Meissner, U.G. / Sibirtsev, A.
Contributing Institute:	Theorie der starken Wechselwirkung; IKP-3 Jülich-Aachen Research Alliance - Simulation Sciences; JARA-SIM
Published in:	Physics letters / B, 666 (2008) S. 352 - 354
Imprint:	Amsterdam North-Holland Publ. 2008
Physical Description:	352 - 354
DOI:	10.1016/j.physletb.2008.07.080
Document Type:	Journal Article
Research Program:	Physik der Hadronen und Kerne
Series Title:	Physics Letters B 666
Subject (ZB):	J/psi(3100): hadronic decay omega(783) mass spectrum: (p anti-p) threshold partial wave final-state interaction numerical calculations: interpretation of experiments Beijing Stor J/psi(3100) > > p anti-p omega(783)
Link:	Get full text OpenAccess OpenAccess
	Publikationsportal JuSER

Please use the identifier: http://dx.doi.org/10.1016/j.physletb.2008.07.080 in citations.
Please use the identifier: http://hdl.handle.net/2128/10466 in citations.

The near-threshold behavior of the p (p) over bar invariant mass spectrum from the J / psi -> omega p (p) over bar decay reported recently by the BES Collaboration is analyzed. Our study demonstrates that there is indeed a clear enhancement in the p (p) over bar invariant mass spectrum near threshold as compared to the phase-space behavior. Moreover, this enhancement is nicely reproduced by the final state interaction in the relevant (S-11(0)) pp partial wave as given by the Julich nucleon-antinucleon model. Therefore, contrary to the statement by the BES Collaboration, their new data on J / psi -> omega p (p) over bar decay in fact strongly support the FSI interpretation of the p (p) over bar enhancement. seen also in other decay reactions. (C) 2008 Elsevier B.V. All rights reserved.