D→ππ decays with final state interactions

2002/01/31 by Medina Ablikim, Dongsheng Du, Dong-Sheng Du +1 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0370-2693(02)01812-9

published as Phys.Lett. B536 (2002) 34-42 · 14 Page, 8 figures, one table added

arxiv created 2002/03/25 · openalex publication_date 2002/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29

Abstract

We study D → ππ decays with final state interactions considered in one-particle-exchange method. A clear physical picture for final state interactions based on quark and hadronic level diagrams is presented. A strong phase is introduced for hadronic effective couplings, which is crucial for explaining the experimental data of D⁺→ π⁺π⁰, D⁰→ π⁺π^-, and D⁰→ π⁰π⁰. Rescattering effects between different D decay channels are usually large. They are important for obtaining correct branching ratios for D→ ππ decays in theoretical calculation.

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