2003/09/30 by Eric S. Swanson · 3 citations
Physics and Astronomy · #Hadron #High-Energy Particle Collisions Research #Isoscalar #Isovector #Meson #Nuclear physics #Nucleon #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Phenomenology (philosophy) #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Quark model #hep-ph
paper · pdf · doi:10.1016/j.physletb.2003.12.057
published as Phys.Lett.B582:167-171,2004 · 5 pages, revtex, no figures, no tables. Version to appear in PLB
arxiv created 2003/12/18 · openalex publication_date 2004/01/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A simple argument for the restoration of parity symmetry high in the hadron spectrum is presented. The restoration scale is estimated to be 2.5 GeV. This in turn implies that typical quark model phenomenology such as scalar confinement or the 3P0 decay model are only useful for low lying states. Minimal requirements for constructing more general phenomenologies are discussed. An additional mass degeneracy between J++ and J−− states is shown to occur and an isovector 3++ state is predicted at roughly 1700 MeV, in contradiction with the naive quark model. Similarly, isovector and isoscalar 4−− states are predicted at 2000 MeV. Finally, these results imply that Regge trajectories must become nonlinear at high spin.