Peking Univ, Dept Phys, Beijing 100871, Peoples R China
; Inst High Energy Phys, Beijing 100049, Peoples R China
We revisit the B+ -> X(3872) + K+ in the pQCD approach assigning to X(3872) a 2(3)P(1) charmonium state. In this theoretical framework all the phenomenological parameters in the wavefunctions and Sudakov factor are a priori fixed by fitting other experimental data; therefore, there hardly are any free parameters in the whole numerical computations. Our results are larger than the upper bound set by the BABAR measurements.