2003/11/11 by Wolfgang Ochs
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1063/1.1799721
12 pages, 1 figure, Invited plenary talk at HADRON'03 (Aschaffenburg, Germany 31 Aug - 6 Sept 2003), to appear in AIP Conf. Proc
arxiv created 2003/11/11 · openalex publication_date 2004/01/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
In the light scalar meson sector (M ≲ 1.8 GeV) one expects at least one qq̄ nonet and a glueball, possibly also multi‐quark states. We discuss the present phenomenological evidence for σ and κ particles; if real, they could be members of the lightest (quark or multi‐quark) nonet together possibly with a0(980) and f0(980). Alternatively, the lightest nonet could include f0(980) but not σ and κ. Future decisive experimental studies, concerning tests of symmetry relations, especially in B‐decays, are outlined.