Speaker
Yu Meng
(Zhengzhou University)
Description
We perform a lattice calculation on the radiative decay of $D_s^*$ using the (2+1) Wilson-Clover gauge ensembles generated by CLQCD collaboration. The radiative transition $D_s^*\rightarrow D_s\gamma$ and Dalitz decay $D_s^*\rightarrow D_s e^+e^-$ are studied respectively. After a continuous extrapolation under three lattice spacings, we finally obtain these decay widths with much reduced errors compared to previous study. A poorly-known decay width of $D_s^*$ is also determined precisely taking into account the the experimental branching fraction.
Primary author
Yu Meng
(Zhengzhou University)
