Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair

Details Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair

2009-05-15

arxiv.org/abs/0905.2561v2

Eur.Phys.J.A42:43-62,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

39 pages, 7 figures, problems with printout of figures resolved, Ref. 33 and referring sentences in section 4 changed

Scientific paper

10.1140/epja/i2009-10862-x

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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