2013/05/03 by Walter Heupel, Heupel, Walter, Stanislav Kubrak +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1305.0650
10 pages, 7 figures, contribution to the 51st International Winter Meeting on Nuclear Physics, 21-25 January 2013, Bormio (Italy)
openalex publication_date 2013/05/03 · arxiv created 2013/05/16 · arxiv updated 2013/05/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We summarize recent results for the spectrum and properties of light pseudoscalar and scalar hadrons in a functional approach to QCD using Dyson-Schwinger and Bethe-Salpeter equations. We focus in particular on the role of pions as virtual constituents in light mesons ('pion cloud effects') as well as their role as constituents of tetraquark bound states. An extension of our framework into the charm quark sector reveals an all-charm tetraquark in the mass region around 5.5 GeV.