Abstract
We study the radiative decays of the X(3872) in the charmonium-molecule model combined with the quark potential model. We obtain \({\Gamma(X(3872) \to J/\psi \, \gamma) = 29.2\,{\rm keV}}\) and \({\Gamma(X(3872) \to \psi' \, \gamma) = 6.3\,{\rm keV}}\). The ratio of these two is 0.22, which is much smaller than the BABAR observation. We find that the result is very sensitive to the amount of the \({\chi_{c1}(1P)}\) component in the X(3872).
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This work is partly supported by Grants-in-Aid for scientific research of MonbuKagakushou (20540281) and (21105006).
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Takizawa, M., Takeuchi, S. & Shimizu, K. Radiative X(3872) Decays in Charmonium-Molecule Hybrid Model. Few-Body Syst 55, 779–782 (2014). https://doi.org/10.1007/s00601-014-0830-6
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DOI: https://doi.org/10.1007/s00601-014-0830-6