B → ρ(ω, φ)η(') Decays and NLO Contributions in pQCD Approach |
| |
作者姓名: | ZHANG Zhi-Qing XIAO Zhen-Jun |
| |
作者单位: | [1]Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210097, China [2]Kavli Institute for Theoretical Physics China, CAS, Beijing 100190, China |
| |
基金项目: | Supported by the National Natural Science Foundation of China under Grant No. 10575052, 10605012, and 10735080;Acknowledgments The authors are very grateful to Kavli Institute for Theoretical Physics China, Beijing, China, where part of this work was done. |
| |
摘 要: | By employing the perturbative QCD (pQCD) factorization approach, we calculate some important next- to-leading-order (NLO) contributions to the two-body charmless hadronic decays B^+ →ρ^+η(') and B^0 → ρ^0(ω, φ)η('), induced by the vertex QCD corrections, the quark-loops as well as the chromo-magnetic penguins. From the numerical results and phenomenological analysis we find that (a) for B^± → ρ^±η(') (B^0 → ρ^0(ω, φ)η(')decays, the partial NLO contributions to branching ratios are small (large) in magnitude; and (b) the pQCD predictions for ACP^dir(B^± → ρ^±η(')) are consistent with the data, while the predicted .ACP(B^0 → ρ^0(ω)η(')) are generally large in magnitude and could be tested by the forthcoming LHCb experiments.
|
关 键 词: | 非线性光学 强子衰变 微扰QCD QCD修正 因式分解 数值结果 染色体 分支比 |
本文献已被 维普 等数据库收录! |
|