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J/psi gamma and psi(2S) gamma decay modes of the X(3872)

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arxiv 0909.0380 v2 pith:FKDOA7R7 submitted 2009-09-02 hep-ph

Yubing Dong , Amand Faessler , Thomas Gutsche , Valery E. Lyubovitskij This is my paper · ORCID
classification hep-ph
keywords gammacomponentdecayradiativedecaysmodesmolecularpredictions
verification ladder T0 review T1 audit T2 compute T3 formal
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The X(3872) with quantum numbers J(PC) = 1(++) is considered as a composite state containing both molecular hadronic and a c bar(c) 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) to J/psi gamma and X(3872) to psi(2S) gamma as obtained in c bar(c) 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/psi gamma) to strong (J/psi pi(+) pi(-)) decays hint towards a subleading role of the c bar(c) component in the X(3872).

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Searching for the pseudoscalar partner of $G(3900)$ via radiative $Y(4230)$ decays

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Calculates B(Y(4230) → γ G0(3900)) = 3.8×10^{-5}–3.3×10^{-4} assuming P-wave molecular interpretations for both states and a triangle mechanism.

  2. Radiative decays of $X(3872)$ within $D{\bar D}^*$ molecular framework

    hep-ph 2026-07 conditional novelty 4.0 of 10

    Using nonrelativistic effective field theory, the X(3872) is treated as a D*D molecule to predict radiative decay widths to D D gamma, finding a strong neutral-over-charged hierarchy and quantifying D D rescattering effects.

  3. The charming case of $X(3872)$ and $\chi_{c1}(2P)$

    hep-ph 2025-01 conditional novelty 4.0 of 10

    The radiative decay ratio R(X(3872)) = B(X(3872) to psi(2S) gamma)/B(X(3872) to J/psi gamma) is predicted to be 1.7 ± 0.3, matching the LHCb value 1.67, supporting the chi_c1(2P) charmonium assignment.

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