Four Quark Interpretation of Y(4260)
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We propose that the Y(4260) particle recently announced by BaBar is the first orbital excitation of a diquark-antidiquark state ([cs][cbar sbar]). Using parameters recently determined to describe the X(3872) and X(3940) we show that the Y mass is compatible with the orbital excitation picture. A crucial prediction is that Y(4260) should decay predominantly in D_s D_sbar. The Y(4260) should also be seen in B non-leptonic decays in association with one kaon. We consider the full nonet of related four-quark states and their predicted properties. Finally, we comment on a possible narrow resonance in the same channel.
Keywords
Cite
@article{arxiv.hep-ph/0507062,
title = {Four Quark Interpretation of Y(4260)},
author = {L. Maiani and F. Piccinini and A. D. Polosa and V. Riquer},
journal= {arXiv preprint arXiv:hep-ph/0507062},
year = {2008}
}
Comments
3 pages, 2 figures, RevTex, Revised discussion of the Y mass