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arXiv · 1310.4373

Selected strong decay modes of Y(4260)

Yubing Dong·Amand Faessler·Thomas Gutsche·Valery E. Lyubovitskij
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Abstract

In present work the Y(4260) resonance is considered as a weakly bound state of a pseudoscalar D and an axial D1 charm meson. We consider the two-body decay Y(4260) -> Zc(3900) + pi where Zc(3900) is treated as hadron molecule as well. Moreover we compute the Y(4260) decay modes J/psi pi(+) pi(-), recently observed by the BESIII Collaboration, and psi(2S) pi(+) pi(-). In the last process both the contact diagram with D D1 -> psi(nS) pi(+) pi(-) and the resonance diagram with D D1 -> Zc(3900) + pi -> psi(nS) pi(+) pi(-) are taken into account.

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Yubing Dong, Amand Faessler, Thomas Gutsche, Valery E. Lyubovitskij. 2013-10-16. Selected strong decay modes of Y(4260). https://doi.org/10.1103/physrevd.89.034018

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