2004/03/31 by A. V. Anisovich, V. V. Anisovich, V.V. Anisovich +5 · 7 citations
Physics and Astronomy · #Amplitude #Bar (unit) #Bottom quark #Charge (physics) #Constituent quark #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark model #Quarkonium #Radiative transfer #Top quark #hep-ph
paper · pdf · doi:10.1134/1.2053339
published in Physics of Atomic Nuclei 68(9), 1554-1572 (Pleiades Publishing) · 24 pages, some typos corrected
arxiv created 2004/12/30 · openalex publication_date 2005/09/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We demonstrate the possibility of a good description of the processes φ(1020) → γππ and φ(1020) → γf 0(980) within the framework of the nonrelativistic quark model assuming f 0(980) to be a dominantly quark-antiquark system. Different mechanisms of the radiative decay, that is, the emission of a photon by the constituent quark (additive quark model) and charge-exchange current, are considered. We also discuss the status of the threshold theorem applied to the studied reactions, namely, the behavior of the decay amplitude at M ππ→m φ and mfo → mφ . In conclusion, the arguments favoring the q q origin of f 0(980) are listed.