王俊杰,张振华.B+→D±π+衰变过程中的直接CP破缺[J].南华大学学报(自然科学版),2019,33(6):60~63.[WANG Junjie,ZHANG Zhenhua.Direct CP Violation in B+→D±π+[J].Journal of University of South China(Science and Technology),2019,33(6):60~63.] |
B+→D±π+衰变过程中的直接CP破缺 |
Direct CP Violation in B+→D±π+ |
投稿时间:2019-09-11 |
DOI: |
中文关键词: 因子化 CP破缺 强相角 预言值 |
英文关键词:nave factorization CP violation strong phase prophecy value |
基金项目:国家自然科学基金项目(11705081);南华大学2019年研究生科研创新项目(193YXC020) |
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中文摘要: |
利用朴素因子化方法,对衰变过程 B+→D±π+ 的CP(Charge-Parity)破缺现象进行了研究。研究表明,这两个过程的CP破缺有很强的关联。首先利用B+→D+π+ 过程CP破缺的实验值抽取出强相位角 δ1=195.95°±5.15°,δ2=344.35°± 5.15°,然后利用抽取的强相位角预言B+→D-π+过程的CP破缺为0.008 2±0.002 6和0.007 9±0.002 6。 |
英文摘要: |
Using the nave factorization approach,the phenomenon of CP (Charge-Parity) violations in the decay process B+→D±π+ was studied.It shows that there is a strong correlation between the CP violation in these two processes.First,the strong phase is extracted by using the experimental values of CP violation of B+→D+π+ process,which is δ1= 195.95°±5.15° and δ2=344.35°±5.15°.Then use the extracted strong phase to predict the CP violation of the B+→D-π+ process,which violation is 0.008 2±0.002 6 and 0.007 9±0.002 6. |
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