N*, Lambda*, Sigma* and Xi* Resonances from J/Psi and Psi' Decays

Abstract

Vector charmonium states $J/\Psi$ and ${\Psi }^{\prime }$ are copiously produced by $e^{+}{e}^{-}$ annihilations at the Beijing Electron Positron Collider (BEPC). Their decays provide an excellent place for studying excited nucleons and hyperons -- $N^{\ast }$, ${\Lambda }^{\ast }$, ${\Sigma }^{\ast }$ and ${\Xi }^{\ast }$ resonances. The systematic study of these excited nucleons and hyperons can provide us with critical insights into the internal quark structure of baryons.

Postscript file, 3 pages. Talk given at FB16 Conf., Taipei, Taiwan, China, March 2000

Cited by in corpus (9)

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• ${\chi }_{c0}(1P)$ decay into $\bar{\Sigma }\Sigma \pi$ in search of an $I=1$, $1/2^{-}$ baryon state around $\bar{K}N$ threshold
• Complementary studies on $N^{\ast }$ from $e^{+}{e}^{-}$, $pp$ and $p\bar{p}$ collisions
• Role of the N*(1440) resonance in the pp->pnpi+ reaction
• Enhancement near the $\bar{p}\Lambda$ threshold in the ${\chi }_{c0}\to \bar{p}{K}^{+}\Lambda$ reaction
• Testing the nature of the $\Lambda$(1520) in the $J/\psi \to \bar{\Lambda }{K}^{-}p$ and $J/\psi \to \bar{\Lambda }{\pi }^{+}{\pi }^{-}\Lambda$ reactions
• Contribution of the non-resonant mechanism to the double and single differential distributions over the invariant variables in the reaction $e^{+}+e^{-}\to N+\bar{N}+{\pi }^0$
• Recent Results on Hadron Spectroscopy from BESIII