We use the time-projection chamber detector to study mechanisms of baryon production in the central rapidity region of jets from e+e- annihilation. On the basis of angular correlations between protons and antiprotons, we exclude the isotropic decay of heavy mesonic clusters as a dominant source of baryons at 95% confidence level. The diquark mechanisms used in string fragmentation models reproduce the data, provided that diquarks are formed in a two-step process which allows mesons to be produced in between the baryon and antibaryon.
ASJC Scopus subject areas
- Physics and Astronomy(all)