The Hidden Charm Decay of $X(3872), Y(3940)$ and Final State Interaction Effects

Details The Hidden Charm Decay of $X(3872), Y(3940)$ and Final State Interaction Effects The Hidden Charm Decay of $X(3872), Y(3940)$ and Final State Interaction Effects

2006-10-21

arxiv.org/abs/hep-ph/0610278v3

Phys.Lett.B645:185-188,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures, 1 table. Version to appear in Physics Letters B

Scientific paper

10.1016/j.physletb.2006.12.031

We investigate whether the final state interaction (FSI) effect plays a significant role in the large hidden charm decay width of X(3872) and Y(3940) using a model. Our numerical result suggests (1) the FSI contribution to $X(3872)\to J/\psi\rho $ is tiny; (2) $\Gamma[ Y(3940)\to D\bar{D}^{*}+\text{h.c.}\to J/\psi\omega ]$ from FSI is around several keV, far less than Belle's experimental value 7 MeV.

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