Radiative decay of the X(3872) as a mixed molecule-charmonium state in effective field theory

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10.1016.j.physletb.2019.134856.pdf

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2019-10-10

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Cincioglu, E.
Özpineci, Altuğ

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Assuming that X(3872) is a mixture between 2P charmonium and (D) over barD* molecular states with J(PC) = 1(++), an analysis of X(3872) radiative decays into J/psi gamma and psi(2S)gamma is presented. The modification of the radiative branching ratio due to possible constructive or destructive interferences between the meson-loop and the short-distance contact term, which is modeled by a charm quark loop, is shown. The model predictions are shown to be compatible with the experimentally determined ratio of the mentioned branching fractions for a wide range of the X(3872) charmonium content. In the case of the destructive interference, a strong restriction on the charmonium admixture is found. (C) 2019 Published by Elsevier B.V.

Subject Keywords

Nuclear and High Energy Physics

URI

https://hdl.handle.net/11511/48716

Journal

PHYSICS LETTERS B

DOI

https://doi.org/10.1016/j.physletb.2019.134856

Collections

Department of Physics, Article

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Citation Formats

E. Cincioglu and A. Özpineci, “Radiative decay of the X(3872) as a mixed molecule-charmonium state in effective field theory,” PHYSICS LETTERS B, pp. 0–0, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48716.