N* Resonances in e+e- Collisions at Bepc

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dc.creatorZou, B. S.
dc.creatorLi, H. B.
dc.creatorCollaboration, representing BES
dc.date2000-04-25
dc.date.accessioned2026-07-07T03:41:14Z
dc.date.available2026-07-07T03:41:14Z
dc.description$J/Ψ$ particles are abundantly produced at the Beijing Electron Positron Collider (BEPC). The $J/Ψ$ decays provide an excellent place for studying $N^*$ resonances. For $J/Ψ\to\bar NNπ$ and $\bar NNππ$, the $πN$ and $ππN$ systems are limited to be pure isospin 1/2 due to isospin conservation. This is a big advantage in studying $N^*$ resonances from $J/Ψ$ decays, compared with $πN$ and $γN$ experiments which suffer difficulty on the isospin decomposition of 1/2 and 3/2. All other $N^*$ decay channels which are presently under investigation at CEBAF(JLab, USA), ELSA(Bonn,Germany) and GRAAL(Grenoble, France) with real photon or space-like virtual photon can also be studied at BEPC complementally with the time-like virtual photon. The process $J/Ψ\to\bar NN^*$ or $N\bar N^*$ provides a new way to probe the internal structure of the $N^*$ resonances. The recent results and outlook of our new $N^*$ program at BEPC are presented.
dc.descriptionPostscript file, 8 pages. Talk given at the International Workshop on the Physics of Excited Nucleons (NSTAR2000), Jefferson Lab, Virginia, USA, February 2000
dc.identifierhttps://arxiv.org/abs/hep-ph/0004220
dc.identifierhttp://arxiv.org/abs/hep-ph/0004220
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/39537
dc.subjectHigh Energy Physics - Phenomenology
dc.titleN* Resonances in e+e- Collisions at Bepc
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