Document Type
Article
Date
10-12-2010
Language
English
Disciplines
Physics
Description/Abstract
The decays of psi(2S) into gamma p bar{p}, pi^0 p bar{p} and eta p bar{p} have been studied with the CLEO-c detector using a sample of 24.5 million psi(2S) events obtained from e^+e^- annihilations at sqrt{s} = 3686 MeV. The data show evidence for the excitation of several N^* resonances in p pi^0 and p eta channels in pi^0 p bar{p} and eta p bar{p} decays, and f_2 states in gamma p bar{p} decay. Branching fractions for decays of psi(2S) to gamma p bar{p}, pi^0 p bar{p} and eta p bar{p} have been determined. No evidence for p bar{p} threshold enhancements was found in the reactions psi(2S)-> X p bar{p}, where X = gamma, pi^0, eta. We do, however, find confirming evidence for a p bar{p} threshold enhancement in J/psi-> gamma p bar{p} as previously reported by BES.
Recommended Citation
Mountain, Raymond; Artuso, Marina; Blusk, S.; and Skwarnicki, T., "Study of Ψ(2S) Decays to γpp, π0pp and η pp and Search for pp Threshold Enhancements" (2010). Physics - All Scholarship. 351.
https://surface.syr.edu/phy/351
Source
Harvested from Arxiv.org
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Additional Information
25 pages, 21 figures, accepted by PRD More information at http://arxiv.org/abs/1007.2886
Click "Download" for additional authors.