2013/06/25 by Feng-Kun Guo, Christoph Hanhart, Ulf-G. Meißner +2 · 1 citation
Physics and Astronomy · #hep-ph #hep-ex
paper · pdf · doi:10.1016/j.physletb.2013.06.053
published as Phys.Lett.B 725: 127, 2013 · 15 pages, 3 figures. Typos fixed, to appear in Phys. Lett. B
arxiv created 2013/06/25 · arxiv updated 2013/07/24
We discuss the possibilities of producing the X(3872), which is assumed to be a D D^* bound state, in radiative decays of charmonia. We argue that the ideal energy regions to observe the X(3872) associated with a photon in e+e- annihilations are around the Y(4260) mass and around 4.45 GeV, due to the presence of the S-wave D D1(2420) and D^* D1(2420) threshold, respectively. Especially, if the Y(4260) is dominantly a D D1 molecule and the X(3872) a D D^* molecule, the radiative transition strength will be quite large.