Meson-meson scattering in QCD-like theories

Charmed Meson Scattering from Lattice QCD

Meson-Meson and Meson-Baryon Interactions in Lattice QCD

We study the meson-meson and meson-baryon interactions in lattice QCD. The simulation is performed on 203 × 24 lattice at β = 5.7 using Wilson gauge action and Wilson fermion at the quenched level. By adopting one static quark for each hadron as “heavy-light meson" and “heavy-light-light baryon", we define the distance r of two hadrons and extract the inter-hadron potential from the energy diff...

Tetraquarks, hadronic molecules, meson-meson scattering, and disconnected contributions in lattice QCD

Feng-Kun Guo,* Liuming Liu, Ulf-G. Meißner, and Ping Wang Helmholtz-Institut für Strahlenund Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany Institut für Kernphysik, Institute for Advanced Simulation, and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany Institute of High Energy Physics and Theoretical Physics Center...

Charm Meson Production from Meson-nucleon Scattering

Because of their large masses, one expects charm mesons to be mostly produced in the initial preequilibrium stage of relativistic heavy ion collisions. They have thus been suggested as possible probes of the initial dynamics in these collisions. Previous studies have been concentrated on the production of charm quarks from the preequilibrium partonic matter [1]. For charm meson production from ...

Very low energy matching of effective meson theories with QCD

A simple matching procedure is proposed to extract constraints on effective meson theories. In this way, a QCD prediction for the pion decay constant is found, Fπ = 2mπ/π ≈ 90 MeV. The same procedure also determines other mesonic observables, like the decay width of the sigma meson to two photons. Finally, some information which can be gained about the hadronic light-by-light contributions to t...