2006/05/31 by F. S. Navarra, M. Nielsen · 3 citations
Engineering · Mathematics · Physics and Astronomy · #Algorithm #Engineering #High-Energy Particle Collisions Research #Mathematics #Mechanical engineering #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Scroll #State (computer science) #hep-ph
paper · pdf · doi:10.1016/j.physletb.2006.06.054
published as Phys.Lett.B639:272-277,2006 · 1 figure added. Version accepted for publication at Phys. Lett. B
arxiv created 2006/06/26 · openalex publication_date 2006/07/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
New spectroscopy from the B factories, the advent of CLEO-c and the BES upgrade renewed the interest in charmonia. Among the new measurements, the state X(3872) has received special attention due to its unexpected properties. Its structure has been studied with different theoretical approaches, most of them being able to reproduce the measured mass. A further test for the theoretical descriptions of the X(3872) is to explain its narrow decay width. In this work we address the decays X→J/ψπ+π−π0 and X→J/ψπ+π−, using QCD sum rules with the hypothesis that X is a four quark state.