2005/01/01 by V. V. Anisovich, V.V. Anisovich, M. A. Matveev +8
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0501003
9 pages, 4 figures
arxiv created 2005/01/01 · openalex publication_date 2005/01/01 · arxiv updated 2009/12/01 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
In the reactions p p→π0π0,ηη,ηη' there are four relatively narrow resonances f2(1920), f2(2020), f2(2240), f2(2300), and a broad one f2(2000) in the mass region 1990--2400 MeV. In the framework of quark combinatorics we carry out an analysis of the decay constants for all five resonances. It is shown that the relations for the decay constants corresponding to the broad resonance f2(2000)→π0π0,ηη, ηη' are the same as those corresponding to a glueball. An additional argument in favour of the glueball--nature of f2(2000) is the fact that f2(1920), f2(2020), f2(2240), f2(2300) fit well the q q trajectories in the (n,M2)-plane (where n is the radial quantum number), while the broad f2(2000) resonance turns out to be an unnecessary extra state for these trajectories.