2010/10/26 by J. Haidenbauer, G. Krein · 10 citations
Physics and Astronomy · #Annihilation #Antiproton #Bar (unit) #Baryon #Charm (quantum number) #High-Energy Particle Collisions Research #Hyperon #Lambda #Lambda baryon #Meson #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Proton #Quantum Chromodynamics and Particle Interactions #Quark #Strangeness #hep-ph
paper · pdf · doi:10.1007/s00601-010-0126-4
published in Few-Body Systems 50(1-4), 183-186 (Springer Science+Business Media) · 5 pages, 2 figures, Contribution to the proceedings of the 21st European Conference on Few-Body Problems in Physics, Salamanca, Spain, 30 August - 3 September 2010
arxiv created 2010/10/26 · openalex publication_date 2010/11/29 · arxiv updated 2011/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the production of charmed mesons (D) and baryons (Lambdac) in antiproton-proton (app) annihilation close to their respective production thresholds. The elementary charm production process is described by either baryon/meson exchange or by quark/gluon dynamics. Effects of the interactions in the initial and final states are taken into account rigorously. The calculations are performed in close analogy to our earlier study on app -> antiLambda-Lambda and app -> antiK-K by connecting the processes via SU(4) flavor symmetry. Our predictions for the antiLambdac-Lambdac production cross section are in the order of 1 to 7 mb, i.e. a factor of around 10-70 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. On the other hand, the resulting cross sections for antiD-D production are found to be in the order of 10-2 -- 10-1 microbarn and they turned out to be comparable to those obtained in other studies.