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

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

2009-09-02

arxiv.org/abs/0909.0380v2

J.Phys.G38:015001,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 5 figures

Scientific paper

10.1088/0954-3899/38/1/015001

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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