The reaction ppbar -> Lambda_c-Lambda_cbar close to threshold

Details The reaction ppbar -> Lambda_c-Lambda_cbar close to threshold The reaction ppbar -> Lambda_c-Lambda_cbar close to threshold

2009-12-14

arxiv.org/abs/0912.2663v1

Phys.Lett.B687:314-319,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures

Scientific paper

10.1016/j.physletb.2010.03.065

Predictions for the charm-production reaction antiproton-proton -> antiLambda_c-Lambda_c for energies near the threshold are presented. The calculations are performed in a meson-exchange framework in close analogy to our earlier study on antiproton-proton -> antiLambda-Lambda by connecting the two processes via SU(4) symmetry. The obtained antiLambda_c-Lambda_c production cross sections are in the order of 1 to 7 \mub, i.e. a factor of around 10 smaller than the corresponding cross sections for antiLambda-Lambda. However, they are 100 to 1000 times larger than predictions of other model calculations in the literature.

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