J/ψγ and ψ(2S)γ decay modes of theX(3872)

2009/09/30 by Yubing Dong, Amand Faessler, Thomas Gutsche +1 · 98 citations
Physics and Astronomy · #Component (thermodynamics) #Hadron #High-Energy Particle Collisions Research #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Radiative transfer #State (computer science) #X(3872) #hep-ph

paper · pdf · doi:10.1088/0954-3899/38/1/015001

published in Journal of Physics G Nuclear and Particle Physics 38(1), 015001 (IOP Publishing) · 18 pages, 5 figures

openalex publication_date 2010/11/17 · arxiv created 2010/11/18 · arxiv updated 2010/11/19 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/30

Abstract

The X (3872) with quantum numbers J PC = 1 ++ is considered as a composite state containing both molecular hadronic and a component. Based on this structure assumption we first constrain model parameters in order to reproduce the predictions for the radiative decay widths of X (3872) → J /ψγ and X (3872) → ψ(2 S )γ as obtained in potential models. Depending on these predictions we find that further inclusion of the molecular component can in principle lead to an improved description of the radiative X (3872) decays. We also show that strong decay modes of the X (3872) and, in particular, the ratio of radiative ( J /ψγ) to strong ( J /ψπ + π − ) decays hint toward a subleading role of the component in the X (3872).

Citations

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• Charmonium

Cited by

• Strong decays of the explicitly exotic doubly charmed DDK bound state
• X(3872) and its heavy quark spin symmetry partners in QCD sum rules
• X(3872) as a molecular DD¯* state in the Bethe-Salpeter equation approach