2006/03/31 by D. V. Bugg, D.V. Bugg · 31 citations
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Computational physics #Computer science #Dispersion (optics) #Dispersion relation #Interference (communication) #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Radiative transfer #SIGNAL (programming language) #Telecommunications #hep-ex
paper · pdf · doi:10.1140/epjc/s2006-02562-2
published in The European Physical Journal C 47(1), 45-55 (Springer Science+Business Media) · 21 pages, 11 figures, Small rearrangement of references
openalex publication_date 2006/05/18 · arxiv created 2006/08/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Data for phi -> gamma (eta-pizero) are analysed using the KK loop model and compared with parameters of a0(980) derived from Crystal Barrel data. The eta-pi mass spectrum agrees closely and the absolute normalisation lies just within errors. However, BES parameters for fo(980) predict a normalisation for phi -> gamma (pizero-pizero) at least a factor 2 lower than is observed. This discrepancy may be eliminated by including constructive interference between fo(980) and sigma. The magnitude required for sigma -> KK is consistent with data on pi-pi -> KK. A dispersion relation analysis by Buttiker, Descotes-Genon and Moussallam of pi-pi -> KK leads to a similar conclusion. Data on pi-pi -> eta-eta also require decays of sigma to eta-eta. Four sets of pi-pi -> KK data all require a small but definite fo(1370) signal.