【摘 要】
：
In this paper, we calculated the B→(J/ψ,ηc)K decays in the perturbative QCD (pQCD) factoriza-tion approach with the inclusion of the partial next-to-leading
【机 构】
：
Department of Physics and Institute of Theoretical Physics
【基金项目】
：
Project on Graduate Students’ Education and Innovation of Jiangsu Province;国家自然科学基金
论文部分内容阅读
In this paper, we calculated the B→(J/ψ,ηc)K decays in the perturbative QCD (pQCD) factoriza-tion approach with the inclusion of the partial next-to-leading order (NLO) contributions. With the inclusion of the significant enhancement from the NLO vertex corrections, the NLO pQCD predictions for the branching ra-tios agree with the data within 2σ errors: Br(B0→J/ψK0)=5.2+3.5-2.8×10-4,Br(B+→J/ψK+)=5.6+3.7-2.9×10-4,Br(B0→ηcK0)=5.5+2.3-2.0×10-4,Br(B+→ηcK+)=5.9+2.5-2.1×10-4.
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