Gang Li

Radiative decays of the isoscalar $S$ -wave $D D ˉ$ molecule

Yuan-Jun Gao, Gang Li, Shi-Dong Liu +1

In the hadronic molecular picture, an isoscalar $S$ -wave $D D ˉ$ molecule is naturally expected as the spin-0 partner of $X (3872)$ . Assuming this state, denoted by $X_{0}$ , to be…

Radiative decays of $X (3872)$ within $D D ˉ^{*}$ molecular framework

Hao-Dong Cai, Run-Hao Chen, Yuan-Jun Gao +3

Within the framework of nonrelativistic effective field theory, we calculate the radiative decay width of the process $X (3872) \to D ˉ D γ$ while taking into account the $D\bar…

Hunting for $B B ˉ$ molecular state $X_{b 0}$ via radiative transition of $Υ (10753)$

Yuan-Jun Gao, Gang Li, Shi-Dong Liu +1

We investigate the radiative decay $Υ (10753) \to γ X_{b 0}$ within the framework of nonrelativistic effective field theory (NREFT). The $Υ (10753)$ is treated as an $S$ - $D$ mixed stat…

Dipion transitions from $X (3872)$ to $χ_{c J} (J = 0, 1, 2)$

Qi Wu, Zhong-Quan Sun, Dian-Yong Chen +2

In this work, we investigate the dipion transition processes $X (3872) \to π π χ_{c J} (J = 0, 1, 2)$ within the framework of heavy hadron chiral perturbation theory, treating $X (3872)$ as…

Light hadronic decays of spin-0 partner of $X (3872)$

Hong-Shuo Gao, Zu-Xin Cai, Gang Li +1

The $X (3872)$ is theoretically predicted to have a spin-0 partner state denoted as $X_{0}$ . Assuming the $X_{0}$ as a $D D ˉ$ molecular bound state, we calculate the decay widths of…

Hadronic decays of possible pseudoscalar $P$ -wave $D D ˉ^{} / D ˉ D^{}$ molecular state

Shi-Dong Liu, Qi Wu, Gang Li

Recently, the new structure $G (3900)$ observed by the BESIII Collaboration in the $e^{+} e^{-} \to D D ˉ$ was identified to be the $P$ -wave $D D ˉ^{*} / D ˉ D^{*}$ vector molecu…

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

Shidong Liu, Qi Wu, Gang Li

We, using an effective Lagrangian approach, investigated the dipionic transition of the $Y (4500)$ newly well established in the process $e^{+} e^{-} \to K^{+} K^{-} J / ψ$ . In this study, the $…

Hidden charmed decays of $X (3872)$ within the $D D ˉ^{*}$ molecular framework

Hao-Dong Cai, Zhao-Sai Jia, Gang Li +1

The dipionic transition of the $X (3872)$ to the $η_{c}$ was investigated using an effective Lagrangian approach. In this study, the $X (3872)$ was assumed to be a $D\bar{D}^\ast + \te…

Investigation of box diagrams for the peak of $Z_{cs} (3985)$ in $e^{+} e^{-} \to D_{s}^{-} D^{* 0} K^{+}$ and $D_{s}^{*-} D^{0} K^{+}$

Yuan-Xin Zheng, Gang Li, Shi-Dong Liu +1

The BESIII collaboration recently observed a charged hidden-charm structure with strangeness in the recoil mass spectrum of $K^{+}$ in the processes $e^{+} e^{-} \to D_{s}^{-} D^{* 0} K^{+}$ or…

Radiative decays of $X (3872)$ in $D D ˉ^{*}$ molecule scenario

Fan Wang, Gang Li, Shi-Dong Liu +1

We investigate the radiative decays of the $X (3872)$ to $γ V (V = ρ^{0}, ω)$ in the molecule scenario, where the $X (3872)$ is regarded as a pure hadronic molecule of the $D\bar{D}^*+c…

Charmless decays of the spin-2 partner of $X (3872)$

Zu-Xin Cai, Zhao-Sai Jia, Gang Li +2

The Belle collaboration recently reported a promising candidate for the spin-2 $D^{*} D ˉ^{*}$ partner of the $X (3872)$ , called the $X_{2}$ for short, having a mass of $(4014.3 \pm 4.…

Pionic transitions of the spin-2 partner of $X (3872)$ to $χ_{c J}$

Shi-Dong Liu, Fan Wang, Zhao-Sai Jia +3

We investigated the pionic transitions between the $X_{2}$ [spin-2 partner of the $X (3872)$ ] and $χ_{c 1, 2}$ using a nonrelativistic effective field theory. The $X_{2}$ is assumed to be…

Production of $X_{b}$ via radiative transition of $Υ (10753)$

Shi-Dong Liu, Hao-Dong Cai, Zu-Xin Cai +4

We studied the radiative transitions between the $Υ (10753)$ , the $S$ - $D$ mixed state of the $Υ (4 S)$ and $Υ_{1} (3^{3} D_{1})$ , and the $X_{b}$ , the heavy quark flavor symmetry counterpar…