Influence of threshold effects induced by charmed meson rescattering
Influence of threshold effects induced by charmed meson rescattering
复制标题
DOI：
10.1103/physrevd.90.074004
复制
发表时间：
2014-03
影响因子：
5
通讯作者：
Xiao-Hai Liu
中科院分区：
文献类型：
--
作者：
Xiao-Hai Liu
我们研究了消灭到$J/\psi\pi\pi$、$\psi^\Prime\pi\pi$和$h_c\pi\pi$的过程$e^+e^-$。重点讨论了被广泛接受的$D_1波Charmonia$\psi(4160)$与$D_1D$、$D_1D^*$与$D_2D^*$的耦合所引起的耦合沟道效应，考虑到这些耦合是$S波，并将尊重重夸克自旋对称性。这些线型显示了一些非平凡的尖点，它们是由再散射环的奇点引起的，这有助于理解$Y(4260)$、$Y(4360)$、$Z_c(3900)$/$Z_c(3885)$和$Z_c(4020)$/$Z_c(4025)$的性质。
We investigate the processes $e^+e^-$ annihilating to $J/\psi\pi\pi$, $\psi^\prime\pi\pi$ and $h_c\pi\pi$. The coupled-channel effects induced by the couplings between the widely accepted $D$-wave charmonia $\psi(4160)$ and $D_1D$, $D_1D^*$ and $D_2D^*$ charmed meson pairs are highlighted, taking into account these couplings are $S$-wave, and will respect heavy quark spin symmetry. The lineshapes show some nontrivial cusps which 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 $Z_c(4020)$/$Z_c(4025)$.