An analysis including most recent Belle data on X(3872) is performed, using coupled channel Flatt\'e formula. A third sheet pole close to but \textit{below} D0D∗0 threshold is found, besides the bound state/virtual state pole discussed in previous literature. The co-existence of two poles near the D0D∗0 threshold indicates that the X(3872) may be of ordinary ccˉ23P1 state origin, distorted by strong coupled channel effects. The latter manifests itself as a molecular bound state (or a virtual state).
Cite
@article{arxiv.0901.1553,
title = {Ambiversion of X(3872)},
author = {Ou Zhang and C. Meng and H. Q. Zheng},
journal= {arXiv preprint arXiv:0901.1553},
year = {2009}
}
Comments
Slightly revised version accepted for publication in Physics Letter B