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The nonleptonic two body B decays involving a light tensor meson in final states
  • ISSN号：1001-6538
  • 期刊名称：Chinese Science Bulletin
  • 时间：2014.10
  • 页码：3738-3747
  • 分类：O572.33[理学—粒子物理与原子核物理;理学—物理] V351.1[航空宇航科学与技术—人机与环境工程]
  • 作者机构：[1]Institute of High Energy Physics, Beijing 100049, China, [2]Department of Physics, Yantai University, Yantai, 264005, China, [3]State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 相关基金：Partly Supported by National Science Foundation of China（11175151,11235005,11375208,11447032,11575151）; Natural Science Foundation of Shandong Province（ZR2014AQ013）; the Program for New Century Excellent Talents in University（NCET）by Ministry of Education of P.R.China（NCET-13-0991）
  • 相关项目：B物理的微扰QCD研究
作者： Zou, Zhi-Tian|Lu, Cai-Dian|
关键词： CP破坏, 破坏参数, Π, QCD因子化, 不确定性, 破碎效果, 振幅, 微扰, CP violation γ extraction B meson decay
中文摘要：

We calculate the tree and penguin amplitudes in the B0→π+π-decay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle γ to 53°γ 70°, from the measurements of the CP violation parameters Cπ+π- and Sπ+π-in B0→π+π-. The U-spin breaking effect between B0→π+π-and B0 s →K+K-is estimated to be around 30%.

英文摘要：

We calculate the tree and penguin amplitudes in the B^0→π^＋^-ecay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle γ to 53°γ 70°, from the measurements of the CP violation parameters C_（π^＋^- and S_（π^＋^-in B^0→π^＋^- The U-spin breaking effect between B^0→π^＋^-nd B^0 s →K^＋K^-is estimated to be around 30%.

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