$\Lambda \bar{\Lambda }$ Production in Two-Photon Interactions at CLEO

Abstract

Using the CLEO detector at the Cornell $e^{+}{e}^{-}$ storage ring, CESR, we study the two-photon production of $\Lambda \bar{\Lambda }$, making the first observation of $\gamma \gamma \to \Lambda \bar{\Lambda }$. We present the cross-section for $\gamma \gamma \to \Lambda \bar{\Lambda }$ as a function of the $\gamma \gamma$ center of mass energy and compare it to that predicted by the quark-diquark model.

10 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLNS

References in corpus (3)

• On Exclusive Reactions in the Time-Like Region
• Octet-Baryon Form Factors in the Diquark Model
• Observation of Excess $\Lambda (\bar{\Lambda })$ Production in Two-Photon Processes at TRISTAN

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• On Electron-Positron Annihilation into Nucleon-Antinucleon Pairs
• Hard exclusive two photon processes in QCD
• Lambda and Sigma0 Pair Production in Two-Photon Collisions at LEP
• Hadron pair photoproduction within the Veneziano model
• Towards the resolution of the e+e- --> Nbar N puzzle
• Exclusive two-photon annihilation at large energy or large virtuality
• Flavour structure of low-energy hadron pair photoproduction