Speaker
Dr
Zhi-Yong Zhou
(Southeast University, China)
Description
By describing the $X(3872)$ using the extended Friedrichs scheme, in
which $D\bar D^*$ is the dominant component, we calculate the decay
rates of the $X(3872)$ to $\pi^0$ and a $P$-wave charmonium
$\chi_{cJ}$ state with $J=0,1$, or $2$, and its decays to
$J/\psi\pi^+\pi^-$ where $\pi^+\pi^-$ are assumed to be produced via
an intermediate $\rho$ state. The decay widths of
$X(3872)\to\chi_{cJ}\pi^0$ for $J=0,1,2$ are of the same order.
However, this model calculation exhibits that the decay rate of
$X(3872)$ to $\chi_{c1}\pi^0$ is one order of magnitude smaller than
its decay rate to $J/\psi\pi^+\pi^-$.
Primary author
Dr
Zhi-Yong Zhou
(Southeast University, China)
Co-author
Dr
Zhiguang Xiao
(USTC)
