The newly observed hidden-charm meson Zc(3900) with quantum numbers J(P) = 1(+) is considered as a hadronic molecule composed of DD*. We give detailed predictions for the decay modes Zc(+) -> J/psi + pi(+) + gamma and Zc(+) -> J/psi + pi(+) + l(+) + l(-) (l = e, mu) in a phenomenological Lagrangian approach.
@article{arxiv.1410.0259,
title = {Radiative and dilepton decays of the hadronic molecule Zc(3900)+},
author = {Thomas Gutsche and Matthias Kesenheimer and Valery E. Lyubovitskij},
journal= {arXiv preprint arXiv:1410.0259},
year = {2014}
}