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

Abstract

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).

18 pages, 5 figures

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• A Phenomenological analysis on isospin-violating decay of $X(3872)$
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• Exotic Hadrons at LHCb
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• Observation of the ${\Lambda }_b^0\to {\chi }_{c1}(3872)p{K}^{-}$ decay
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• Possible precise measurements of the $X(3872)$ mass with the $e^{+}{e}^{-}\to {\pi }^0\gamma X(3872)$ and $p\bar{p}\to \gamma X(3872)$ reactions
• Towards the decay properties of deuteron-like state $d_{N\Omega }$
• Probing the nature of the ${\chi }_{c1}(3872)$ state using radiative decays
• The nature of ${\chi }_{c1}\left(3872\right)$ and $T_{cc}^{+}\left(3875\right)$
• Radiative decay of the $X(3872)$ as a mixed molecule-charmonium state in effective field theory
• The role of electromagnetic interaction in the $X(3872)$ and its analogs
• Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs
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