The strong coupling constant g_{D^* D π} and final-state interactions

2007/09/14 by Zhi-Gang Wang, Wang, Zhi-Gang
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.0709.2295

7 pages, 1 figure

arxiv created 2007/09/14 · openalex publication_date 2007/09/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this article, we study the contribution from the final-state interactions to the strong coupling constant g_{D^* D π}. We take an assumption that the momentum transfers in the strong decay D^*+ → D⁰ π⁺ be large to validate the operator product expansion in the light-cone QCD sum rules. At large momentum transfers, the final-state interactions play an important role, and we should take them into account.

Related

• The g_(Ko* K pi) coupling constant in QCD
• Light cone QCD sum rules for the g_ΞQΞQπ coupling constant
• D^* D π and B^* B π couplings from Dyson-Schwinger equations framework
• Strong two-meson decays of light and charmed vector mesons
• D+ -> K- pi+ pi+ : heavy meson decays and final state interactions