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High Energy Physics - Phenomenology

arXiv:hep-ph/0507062 (hep-ph)
[Submitted on 5 Jul 2005 (v1), last revised 18 Jul 2005 (this version, v2)]

Title:Four Quark Interpretation of Y(4260)

Authors:L. Maiani, F. Piccinini, A.D. Polosa, V. Riquer
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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.
Comments: 3 pages, 2 figures, RevTex, Revised discussion of the Y mass
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/0507062
  (or arXiv:hep-ph/0507062v2 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0507062
Journal reference: Phys.Rev.D72:031502,2005
Related DOI: https://doi.org/10.1103/PhysRevD.72.031502

Submission history

From: A. D. Polosa [view email]
[v1] Tue, 5 Jul 2005 17:56:56 UTC (820 KB)
[v2] Mon, 18 Jul 2005 14:41:39 UTC (822 KB)
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