M ay 2 00 1 Analysis of direct CP violation in B − → D 0 D − s , D 0 D − decays
نویسندگان
چکیده
We investigate the possibility of observing the direct CP violation in the decay modes B → D0D− s and D0D− within the Standard Model. Including the contributions arising from the tree, annihilation, QCD as well as electroweak penguins with both timeand space-like components, we find that the direct CP asymmetry in B → D0D− s is very small ∼ 0.2 % but in B → D0D− decay it can be as large as 4%. Approximately 107 charged B mesons are required to experimentally observe the CP asymmetry parameter for the later case. Since this is easily accessible with the currently running B factories, the decay mode B − → D0D− may be pursued to look for CP violation. PACS Numbers. : 11.30 Er, 13.25 Hw
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تاریخ انتشار 2008