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arXiv · 0905.2561

Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair

A. T. Goritschnig·P. Kroll·W. Schweiger
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Abstract

The process p-pbar -> Lambda_c-Antilambda_c is investigated within the handbag approach. It is shown that the dominant dynamical mechanism, characterized by the partonic subprocess u-ubar -> c-cbar factorizes in the sense that only the subprocess contains highly virtual partons, a gluon to lowest order of perturbative QCD, while the hadronic matrix elements embody only soft scales and can be parameterized in terms of helicity flip and non-flip generalized parton distributions. Modelling these parton distributions by overlaps of light-cone wave functions for the involved baryons we are able to predict cross sections and spin correlation parameters for the process of interest.

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A. T. Goritschnig, P. Kroll, W. Schweiger. 2009-05-19. Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair. https://doi.org/10.1140/epja/i2009-10862-x

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