2009/02/28 by Xiang Liu, Bo Zhang, Xue-Qian Li · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.physletb.2009.04.047
published as Phys.Lett.B675:441-445,2009 · 6 pages, 4 figures, 1 tables. More references and discussions added, typos corrected. Accepted by Phys. Lett. B
arxiv created 2009/04/16 · openalex publication_date 2009/04/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
In this Letter we suggest that the obvious discrepancy between theoretical prediction on the non-DD¯ decays of ψ(3770) and data is to be alleviated by taking final state interaction (FSI) into account. By assuming that ψ(3770) overwhelmingly dissociates into DD¯, then the final state interaction induces a secondary process, we calculate the branching ratios of ψ(3770)→DD¯→J/ψη, ρπ, ωη, K∗K. Our results show that the branching ratio of ψ(3770)→non-DD¯ can reach up to Bnon-DD¯FSI=(0.2–1.1)% while typical parameters I=0.4GeV−2 and α=0.8–1.3 are adopted. This indicates that the FSI is obviously non-negligible.