Influence of threshold effects induced by charmed meson rescattering

2014/03/31 by Xiao-Hai Liu · 1 citation
Physics and Astronomy · #hep-ph #hep-ex

paper · pdf · doi:10.1103/physrevd.90.074004

published as Phys. Rev. D 90, 074004 (2014) · 12 pages, 4 figures. Matched with the published version. Some of the predictions are consistent with the latest results of BESIII in arXiv:1703.08787

arxiv created 2017/03/28 · arxiv updated 2017/03/29

Abstract

We investigate the processes e⁺e^- annihilating to J/ψππ, ψ^′ππ and h_cππ. The coupled-channel effects induced by the couplings between the widely accepted D-wave charmonium ψ(4160) and D₁D, D₁D^* and D₂D^* charmed meson pairs in the S-wave state with couplings given by heavy quark spin symmetry are analyzed. The line shapes show the presence of cusps that result from the singularities of the rescattering loops, which could be helpful in understanding the nature of Y(4260), Y(4360), Z_c(3900)/Z_c(3885) and Z_c(4020)/Z_c(4025).

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