Speaker
Chong-Chung Lih
(szmc)
Description
We study the decay constants ($f_M$) of the Charmful and beautifu vector and tensor mesons in the light front quark model. Here, we tried two different distribution amplitudes to study the decay constants. With the known pseudoscalar meson decay constants of $f_{D}$, $f_{D_{s}}$, $f_{B}$ and $f_{B_{s}}$ as the input parameters to determine the light-front wave functions, we obtain that $f_{D^{*}, D^{*}_{s}, B^{*},B^{*}_{s} } = (252.0^{+13.8}_{-11.6}$, $318.3^{+15.3}_{-12.6}$ , $201.9^{+43.2}_{-41.4}$, $244.2\pm7.0$) and $f_{D_2^{*},D_{s2}^{*},B^{*}_{2},B^{*}_{s2}}$= ($143.6^{+24.9}_{-21.8}$, $209.5^{+29.1}_{-24.2}$, $80.9^{+33.8}_{-27.7}$, $109.7^{+15.7}_{-15.0}$).
