Eur. Phys. J. C (2004) 37: 173-184
https://doi.org/10.1140/epjc/s2004-01979-9Form factors and semileptonic decay of
https://doi.org/10.1140/epjc/s2004-01979-9
theoretical physics
Form factors and semileptonic decay of 
from QCD sum rule
1
CCAST (World Laboratory), P.O. Box 8730, 100080, Beijing, China
2
Institute of High Energy Physics, P.O. Box 918(4), 100039, Beijing, China
* e-mail: duds@mail.ihep.ac.cn
We calculate the 
transition form factors V, A
0, A
1 and A
2, and study the semileptonic decay of based on the QCD sum rule method. We compare our results of the ratios of V(0)/A
1(0), A
2(0)/A
1(0), 
, and the total decay branching ratio of with the experimental data and find that they are consistent.
© Springer-Verlag, 2004
