Dbar-N interaction from meson-exchange and quark-gluon dynamics

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dc.creatorHaidenbauer, J.
dc.creatorKrein, G.
dc.creatorMeißner, Ulf-G.
dc.creatorSibirtsev, A.
dc.date2007-04-27
dc.date.accessioned2026-07-07T10:35:43Z
dc.date.available2026-07-07T10:35:43Z
dc.descriptionWe investigate the Dbar-N interaction at low energies using a meson-exchange model supplemented with a short-distance contribution from one-gluon-exchange. The model is developed in close analogy to the meson-exchange KN interaction of the Juelich group utilizing SU(4) symmetry constraints. The main ingredients of the interaction are provided by vector meson (rho, omega) exchange and higher-order box diagrams involving D*N, DΔ, and D*Δintermediate states. The short range part is assumed to receive additional contributions from genuine quark-gluon processes. The predicted cross sections for Dbar-N for excess energies up to 150 MeV are of the same order of magnitude as those for KN but with average values of around 20 mb, roughly a factor two larger than for the latter system. It is found that the omega-exchange plays a very important role. Its interference pattern with the rho-exchange, which is basically fixed by the assumed SU(4) symmetry, clearly determines the qualitative features of the Dbar-N interaction -- very similiar to what happens also for the KN system.
dc.description11 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0704.3668
dc.identifierhttp://arxiv.org/abs/0704.3668
dc.identifierEur.Phys.J.A33:107-117,2007
dc.identifierdoi:10.1140/epja/i2007-10417-3
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179822
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDbar-N interaction from meson-exchange and quark-gluon dynamics
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