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arXiv 0712.3469hep-ex
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B0 -> D-(+)K0 Pi+(-)衰变的含时Dalitz图分析

Time-dependent Dalitz plot analysis of B0 -> D-(+) K0 Pi+(-) decays

The BABAR Collaboration, B. Aubert

摘要:

我们首次给出了由含时Dalitz图分析B^0 -> D-(+)K 0 Pi+(-)衰变得到的弱相2b+g的测量结果。使用PEP-II非对称储能环上的BABAR探测器收集的大约347*10^{6}个BBbar对的样本,假设b -> u和b -> c衰减幅度的比值r为0.3,我们得到2b+g =(83 +/-53 +/-20)度和(263 +/- 53 +/- 20)度。还从拟合中提取与b -> c转变相关联的共振的幅度和相位。

英文摘要:

We present for the first time a measurement of the weak phase 2b+g obtained from a time-dependent Dalitz plot analysis of B^0 -> D-(+) K0 Pi+(-) decays. Using a sample of approximately 347*10^{6} BBbar pairs collected by the BABAR detector at the PEP-II asymmetric-energy storage rings, we obtain 2b+g = (83 +/- 53 +/- 20) degrees and (263 +/- 53 +/- 20) degrees assuming the ratio r of the b -> u and b -> c decay amplitudes to be 0.3. The magnitudes and phases for the resonances associated with the b -> c transitions are also extracted from the fit.

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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