BB? Strong Coupling

The study of B-meson has always been a hot topic in particle physics.At present,many people have studied the coupling constant of b-meson by using the method of QCD light-cone,but the results are not ideal,and the calculated value is significantly smaller than other methods.We re-construct the correlation function,we adopt the axial vector current (?)i???5q and the pseudoscalar current (?)i?5q as interpolating current.In this paper,the coupling constants of BB? are studied under the theoretical framework of QCD cone summation rule.We use the latest experimental data as input and obtain the latest results of coupling constant.