Branching Fraction Measurements of psi(2S) Decay to Baryon-Antibaryon Final States

Abstract

Using 3.08 million psi(2S) decays observed in e^+e^- collisions by the CLEO detector, we present the results of a study of the psi(2S) decaying into baryon-antibaryon final states. We report the most precise measurements of the following eight modes: proton-antiproton, lambda-antilambda, Xi^- antiXi^-, Xi^0-antiXi^0 (first observation), Sigma+-antiSigma^+ (first observation), and Sigma^0-antiSigma^0, and place upper limits for the modes, Xi^0*-antiXi^0* and Omega^- antiOmega^-.

8 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2005/, submitted to PRL

References in corpus (5)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Observation of 1^-0^- Final States from psi(2S) Decays and e^+e^- Annihilation
• Measurement of the final states $\omega {\pi }^0$, $\rho \eta$, and $\rho {\eta }^{{}^{\prime }}$ from $\psip$ electromagnetic decays and $\ee$ annihilations
• Measurements of $\psi (2S)$ decays into $\varphi {\pi }^0$, $\varphi \eta$, $\varphi {\eta }^{{}^{\prime }}$, $\omega \eta$, and $\omega {\eta }^{{}^{\prime }}$
• Measurement of the angular distribution in $\bar{p}p\to \psi (2S)\to e^{+}{e}^{-}$

Cited by in corpus (24)

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• ${\Sigma }^{+}$ and ${\bar{\Sigma }}^{-}$ polarization in the $J/\psi$ and $\psi (3686)$ decays
• Hyperon Form Factors & Diquark Correlations
• First Measurements of Timelike Form Factors of the Hyperons, Lambda0, Sigma0, Sigma+, Xi0, Xi-, and Omega-, and Evidence of Diquark Correlations
• Study of $J/\psi$ and $\psi (3686)$ decay to $\Lambda \bar{\Lambda }$ and ${\Sigma }^0{\bar{\Sigma }}^0$ final states
• Study of $J/\psi$ and $\psi (3686)\to \Sigma (1385{)}^0\bar{\Sigma }(1385{)}^0$ and ${\Xi }^0{\bar{\Xi }}^0$
• Study of $\psi$ decays to the ${\Xi }^{-}{\bar{\Xi }}^{+}$ and $\Sigma (1385{)}^{\mp }\bar{\Sigma }(1385{)}^{\pm }$ final states
• Measurements of psi(2S) decays to octet baryon-antibaryon pairs
• Determination of the relative phase in ψ' and J/ψ decays into baryon and antibaryon
• Higher-order multipole amplitudes in charmonium radiative transitions
• First measurements of J/Psi decays into ${\Sigma }^{+}{\bar{\Sigma }}^{-}$ and ${\Xi }^0{\bar{\Xi }}^0$
• Exclusive Baryon-Antibaryon Decays of the chi_cJ Mesons
• Observation of $\psi (3686)\to n\bar{n}$ and improved measurement of $\psi (3686)\to p\bar{p}$
• Measurements of the branching fractions of $\psi (3686)\to {\bar{\Sigma }}^0\Lambda +c.c.$ and ${\chi }_{cJ(J=0,1,2)}\to \Lambda \bar{\Lambda }$
• Observation of $\psi (3686)\to \Xi (1530{)}^0\bar{\Xi }(1530{)}^0$ and $\Xi (1530{)}^0{\bar{\Xi }}^0$
• Measurements of $\psip$ decays into $\gamma K\bar{K}\pi$ and $γη\pipi$
• A model to explain angular distributions of $J/\psi$ and $\psi (2S)$ decays into $\Lambda \overline{\Lambda }$ and ${\Sigma }^0{\overline{\Sigma }}^0$
• Measurement of chi_cJ Decays to 2(pi^+pi^-)ppbar Final States
• Symmetry analysis of charmonium two-body decay
• Measurements of $J/\psi$ and $\psi (2S)$ decays into $\Lambda \bar{\Lambda }{\pi }^0$ and $\Lambda \bar{\Lambda }\eta$
• Review of Recent Measurements of Meson and Hyperon Form Factors