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

2013/04/30 by Dian-Yong Chen, Xiang Liu, Takayuki Matsuki · 1 citation
Physics and Astronomy · #hep-ph #hep-ex

paper · pdf · doi:10.1103/physrevd.88.036008

published as Phys.Rev.D88:036008,2013 · 5 pages, 2 figures, 2 tables. Accepted by Phys. Rev. D

arxiv created 2013/08/15 · arxiv updated 2013/08/21

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^± and π⁺π^- invariant mass spectra of the Y(4260)→ 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)→ π⁺π^- J/ψ)/dm_J/ψπ^± and dΓ(Y(4260)→ π⁺π^- J/ψ)/dm_{π⁺ π^-} marvelously agree with the BESIII data to reproduce the Z_c(3900) structure.

Cited by

• Dipionic transitions of Y(4500) to J/ψ