2005/05/31 by Wei Liu, W. Liu, Che Ming Ko +3 · 9 citations
Physics and Astronomy · #Absorption (acoustics) #High-Energy Particle Collisions Research #Meson #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1016/j.nuclphysa.2005.11.008
published in Nuclear Physics A 765(3-4), 401-425 (Elsevier BV) · 29 pages, 10 figures, version to appear in Nucl. Phys. A
openalex publication_date 2005/11/29 · arxiv created 2005/12/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using the [SU(3)L × SU(3)R]global% × [SU(3)V]local chiral Lagrangian with hidden local symmetry, we evaluate the cross sections for the absorption of eta meson (% η) by pion (π), rho (ρ), omega (ω), kaon (K), and kaon star (K^*) in the tree-level approximation. With empirical masses and coupling constants as well as reasonable values for the cutoff parameter in the form factors at interaction vertices, we find that most cross sections are less than 1 mb, except the reactions ρη→ K K^*( KK^*), ωη→ K K^*( KK^*), K^*η→ρK, and K^*η→ωK, which are a few mb, and the reactions πη→ K K and Kη→πK, which are more than 10 mb. Including these reactions in a kinetic model based on a schematic hydrodynamic description of relativistic heavy ion collisions, we find that the abundance of eta mesons likely reaches chemical equilibrium with other hadrons in nuclear collisions at the Relativistic Heavy Ion Collider.