Eur. Phys. J. C (2007) 49: 643-650
https://doi.org/10.1140/epjc/s10052-006-0135-0

Regular Article - Theoretical Physics

Revisiting B⁺→X(3872)+K⁺ in pQCD assigning to X(3872) 2³P₁ charmonium

¹ Department of Physics, Peking University, Beijing, 100871, P.R. China
² Institute of High Energy Physics, P.O. Box 918(4), Beijing, 100049, P.R. China

^* e-mail: liuxiang726@mail.nanking.edu.cn

Received: 18 August 2006
Revised: 16 September 2006
Published online: 21 November 2006

Abstract

We revisit the B⁺→X(3872)+K⁺ in the pQCD approach assigning to X(3872) a 2³P₁ 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.