Electronic Resource
Springer
The European physical journal
39 (2005), S. 173-178
ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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 $\Delta^{ + + }$ cross section is of the same order of magnitude as the proton cross section, well within experimental bounds.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epjc/s2004-02092-y
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