We investigate the enhancement in the D^0\bar{ D}^0\pi^0 final state with the mass M=3875.2\pm 0.7^{ +0.3}_{ -1.6}\pm 0.8 MeV found recently by the Belle Collaboration in the B\to K D^0\bar{ D}^0\pi^0 decay and test the possibility that this is yet another manifestation of the well-established resonance X(3872). We perform a combined Flatte analysis of the data for the D^0\bar{ D}^0\pi^0 mode, and for the \pi^+\pi^- J/\psi mode of the X(3872). Only if the X(3872) is a virtual state in the D^0\bar{ D}^{ *0} channel, the data on the new enhancement comply with those on the X(3872). In our fits, the mass distribution in the D^0\bar{ D}^{ *0} mode exhibits a peak at 2-3 MeV above the D^0\bar{ D}^{ *0} threshold, with a distinctive non-Breit-Wigner shape.
Categories: hep-ph hep-ex