1997/07/09 by D. Barberis, The WA102 Collaboration, D. Barberis et al +60 · 2 citations
Chemistry · Mathematics · Physics and Astronomy · #Advanced NMR Techniques and Applications #Geometry #Mathematics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Scalar (mathematics) #hep-ex
paper · pdf · doi:10.1016/s0370-2693(97)01140-4
published as Phys.Lett.B413:217-224,1997 · 14 pages, Latex, 3 Figures
arxiv created 1997/07/09 · openalex publication_date 1997/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The reaction pp -> pf (pi+pi-pi+pi-) ps has been studied at 450 GeV/c in an experiment designed to search for gluonic states. A spin analysis has been performed and the dPT filter applied. In addition to the well known f1(1285) there is evidence for two JPC=2-+ states called the eta2(1620) and eta2(1875) and a broad scalar called the f0(2000). The production of these states as a function of the dPT kinematical filter shows the behaviour expected for qqbar states. In contrast, there is evidence for two states at 1.45 GeV and at 1.9 GeV which do not show the behaviour observed for qqbar states.