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arXiv · 1304.5845

Reproducing the $Z_c(3900)$ structure through the initial-single-pion-emission mechanism

Dian-Yong Chen·Xiang Liu·Takayuki Matsuki
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Abstract

Being stimulated by the recent BESIII observation of a charged charmoniumlike structure $Z_c(3900)$, in this work we study the distributions of the $J/ψπ^\pm$ and $π^+π^-$ invariant mass spectra of the $Y(4260)\to π^+π^- J/ψ$ decay by the initial-single-pion-emission mechanism, where the interference effects of the ISPE mechanism with two other decay modes are also taken into account. The obtained $dΓ(Y(4260)\to π^+π^- J/ψ)/dm_{J/ψπ^\pm}$ and $dΓ(Y(4260)\to π^+π^- J/ψ)/dm_{π^+ π^-}$ marvelously agree with the BESIII data to reproduce the $Z_c(3900)$ structure.

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Dian-Yong Chen, Xiang Liu, Takayuki Matsuki. 2013-08-15. Reproducing the $Z_c(3900)$ structure through the initial-single-pion-emission mechanism. https://doi.org/10.1103/physrevd.88.036008

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