Branching ratio and CP asymmetry of B-0 ->eta(('))eta((')) decays in the perturbative QCD approach

作者：Xiao Zhen jun^*; Guo Dong qin; Chen Xin fen

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2007, 75(1): 014018.

DOI：10.1103/PhysRevD.75.014018

yyy We calculate the CP-averaged branching ratios and CP-violating asymmetries for B-0 ->eta eta, eta eta(') and eta(')eta(') decays by employing the perturbative QCD (pQCD) factorization approach. The pQCD predictions for the CP-averaged branching ratios are Br(B-0 ->eta eta)approximate to 0.67x10(-7), Br(B-0 ->eta eta('))approximate to 0.18x10(-7), and Br(B-0 ->eta(')eta('))approximate to 0.11x10(-7), which are consistent with currently available experimental upper limits. We also predict large CP-violating asymmetries for the considered three decay modes, which can be tested by the future B meson experiments.

• 出版日期2007-1
• 单位南京师范大学