Radiative decays of the neutral Z(c)(3900)

We study the radiative decays of the Z(c)(3900)(0) in a hadronic molecule picture, where the Z(c)(3900) is treated as a DD + c.c hadronic molecule. The partial widths of Gamma(Z(c)(3900)(0) -> eta(c)(2S)) and Gamma(Z(c)(3900)(0) -> gamma chi(c0)) are predicted to be of order 10 keV, and the cross sections for sigma(e+e- -> pi(0)Z(c)(3900) -> pi(0)gamma eta(c)(2S)) and sigma(e(+)e(-) -> pi(0)Z(c)(3900) -> pi(0)gamma chi(c0)) are of order 0.1 pb at 4.23 GeV, which may be accessible for the BESIII and forthcoming Belle II.

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