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Exclusive Decuplet-Baryon Pair Production in Two-Photon Collisions

Carola F. Berger·Wolfgang Schweiger
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Abstract

This work extends our previous studies of two-photon annihilation into baryon-antibaryon pairs from spin-1/2 octet to spin-3/2 decuplet baryons. Our approach is based on perturbative QCD and treats baryons as quark-diquark systems. Using the same model parameters as in our previous work, supplemented by QCD sum-rule results for decuplet baryon wave functions, we are able to give absolute predictions for decuplet baryon cross sections without introducing new parameters. We find that the $Δ^{++}$ cross section is of the same order of magnitude as the proton cross section, well within experimental bounds.

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Carola F. Berger, Wolfgang Schweiger. 2004-11-08. Exclusive Decuplet-Baryon Pair Production in Two-Photon Collisions. https://doi.org/10.1140/epjc%2Fs2004-02092-y

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