论文标题
调查$η^\ prime_ {1}（1855）$ j/ψ\toη^\ prime_ {1}（1855）η^{（\ prime）} $
Investigating $η^\prime_{1}(1855)$ exotic states in $J/ψ\toη^\prime_{1}(1855)η^{(\prime)}$ decays
论文作者
论文摘要
BESIII合作的$ J/ψ\至η^\primeγ$衰减的分析声称，与$ i^gj^{pc} = 0^+1^{ - +} $一起观察了异国情调状态$η_1（1855）$。 To establish its C-parity partner $η^\prime_{1}(1855)$ in the picture of the $K \bar{K}_1(1400)$ molecular state, we propose that $J/ψ\toη^\prime_{1}(1855)η^{(\prime)}$ receives the main contributions from the final state interaction of $ kk^*$（$ k^+ k^{* - } $，$ k^ - k^{*+} $，$ k^0 \ bar {k}^{*0} $，和$ \ bar {k}^0 k^0 k^{*0} $）。具体来说，$ k $和$ k^*$ in $ j/ψ\ to kk^*$衰减变换为$η^\ prime_ {1}（1855）η^{（\ prime）} $，通过交换$ k_1（1400）$。我们预测$ {\ cal b}（j/ψ\ toη^{\ prime} _1（1855）η）=（6.3^{+12.6} _ { - 3.5}） η^{\ prime} _1（1855）η^{\ prime}）=（6.5^{+6.6} _ { - 4.6}）\ times 10^{ - 6} $，可以在$ j/ψ\ to k^*bar^*bar {k} {k}^^*prime中研究$ j/ψ\ to $ j/ψ\ to
An analysis of the $J/ψ\to ηη^\primeγ$ decay by the BESIII collaboration claims the observation of an exotic state $η_1(1855)$ with $I^GJ^{PC}=0^+1^{-+}$. To establish its C-parity partner $η^\prime_{1}(1855)$ in the picture of the $K \bar{K}_1(1400)$ molecular state, we propose that $J/ψ\toη^\prime_{1}(1855)η^{(\prime)}$ receives the main contributions from the final state interaction of $KK^*$($K^+ K^{*-}$, $K^- K^{*+}$, $K^0 \bar{K}^{*0}$, and $\bar{K}^0 K^{*0}$). Specifically, $K$ and $K^*$ in $J/ψ\to KK^*$ decays transform as $η^\prime_{1}(1855)η^{(\prime)}$, by exchanging a $K_1(1400)$. We predict ${\cal B}(J/ψ\to η^{\prime}_1(1855)η)=(6.3^{+12.6}_{-3.5})\times 10^{-6}$, and ${\cal B}(J/ψ\to η^{\prime}_1(1855)η^{\prime}) =(6.5^{+6.6}_{-4.6})\times 10^{-6}$, which can be studied in the $J/ψ\to K^*\bar{K}^*η^{(\prime)}$ decays.
