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arXiv 0909.1495hep-phhep-ex
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从B0到DK + π衰变幺正三角角γ测量的展望

Prospects for the Measurement of the Unitarity Triangle Angle gamma from B0 to DK+pi- Decays

Tim Gershon, Mike Williams

备注：
12 pages, 10 figures. v2 as published
发表信息：
Phys.Rev.D80:092002,2009
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摘要：

在未来的实验中，从衰变$B^0 \to DK^{*0}$中精确测量幺正三角角$γ$的可能性是众所周知的。最近有人提出，通过分析$B^0 \to DK^+π^-$ Dalitz图提取相对于风味特异性衰减$B^0 \to D_2^{*-}K^+$的振幅，可以显著提高灵敏度。本文对这种方法作了一个扩展，包括中性$D$介子在压制末态下的重构。使用该方法估计对$γ$的灵敏度，并与单独使用$B^0 \to DK^{*0}$衰变获得的灵敏度进行比较。实验的影响，如背景污染，也被考虑。该方法似乎是可用于测定$γ$的方法家族中极具吸引力的补充。

英文摘要：

The potential for a precise measurement of the Unitarity Triangle angle $γ$ in future experiments from the decay $B^0 \to DK^{*0}$ is well-known. It has recently been suggested that the sensitivity can be significantly enhanced by analysing the $B^0 \to DK^+π^-$ Dalitz plot to extract amplitudes relative to those of the flavour-specific decay $B^0 \to D_2^{*-}K^+$. An extension to this method which includes the case where the neutral $D$ meson is reconstructed in suppressed final states is presented. The sensitivity to $γ$ is estimated using this method and compared to that obtained using the $B^0 \to DK^{*0}$ decay alone. Experimental effects, such as background contamination, are also considered. This approach appears to be a highly attractive addition to the family of methods that can be used to determine $γ$.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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