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Study of psi(2S) Decays to gamma p bar{p}, pi^0 p bar{p} and eta p bar{p} and Search for p bar{p} Threshold Enhancements | | CLEO Collaboration
; J. P. Alexander
; D. G. Cassel
; S. Das
; R. Ehrlich
; L. Fields
; L. Gibbons
; S. W. Gray
; D. L. Hartill
; B. K. Heltsley
; D. L. Kreinick
; V. E. Kuznetsov
; J. R. Patterson
; D. Peterson
; D. Riley
; A. Ryd
; A. J. Sadoff
; X. Shi
; W. M. Sun
; J. Yelton
; P. Rubin
; N. Lowrey
; S. Mehrabyan
; M. Selen
; J. Wiss
; S. Adams
; M. Kornicer
; R. E. Mitchell
; M. R. Shepherd
; C. M. Tarbert
; D. Besson
; T. K. Pedlar
; J. Xavier
; D. Cronin-Hennessy
; J. Hietala
; P. Zweber
; S. Dobbs
; Z. Metreveli
; K. K. Seth
; A. Tomaradze
; T. Xiao
; S. Brisbane
; J. Libby
; L. Martin
; A. Powell
; P. Spradlin
; G. Wilkinson
; H. Mendez
; J. Y. Ge
; D. H. Miller
; I. P. J. Shipsey
; B. Xin
; G. S. Adams
; D. Hu
; B. Moziak
; J. Napolitano
; K. M. Ecklund
; J. Insler
; H. Muramatsu
; C. S. Park
; L. J. Pearson
; E. H. Thorndike
; F. Yang
; S. Ricciardi
; C. Thomas
; M. Artuso
; S. Blusk
; R. Mountain
; T. Skwarnicki
; S. Stone
; J. C. Wang
; L. M. Zhang
; G. Bonvicini
; D. Cinabro
; A. Lincoln
; M. J. Smith
; P. Zhou
; J. Zhu
; P. Naik
; J. Rademacker
; D. M. Asner
; K. W. Edwards
; K. Randrianarivony
; G. Tatishvili
; R. A. Briere
; H. Vogel
; P. U. E. Onyisi
; J. L. Rosner
; | | Date: |
17 Jul 2010 | | 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. | | Source: | arXiv, 1007.2886 | | Services: | Forum | Review | PDF | Favorites | |
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