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arXiv 0708.1845hep-ex
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B0 -> Kspi0pi0和B0 -> KsKs衰变中CP破坏参数的测量

Measurements of CP Violation Parameters in B0 -> Kspi0pi0 and B0 -> KsKs Decays

The Belle Collaboration, K. Abe

摘要:

我们利用在KEKB非对称能量e+e-对撞机Y(4S)共振下工作的Belle探测器收集的包含657 × 10^6个BBbar对的数据样本,测量了B 0-> Kspi 0 pi 0和B 0-> KsKs衰变中的CP破坏参数。我们测量SKspi 0 pi 0 = +0.43+/-0.49+/-0.09,AKspi 0 pi 0 = -0.17+/-0.24+/-0.06,SKsKs = -0.38+/-0.77+/-0.08和AKsKs = -0.38 +/-0.38+/-0.05,其中第一和第二误差分别是统计误差和系统误差。

英文摘要:

We present a measurement of the CP violation parameters in B0 ->Kspi0pi0 and B0 -> KsKs decays using a data sample containing 657x10^6 BBbar pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider operating at the Y(4S) resonance. We measure SKspi0pi0 = +0.43+/-0.49+/-0.09, AKspi0pi0 = -0.17+/-0.24+/-0.06, SKsKs = -0.38+/-0.77+/-0.08 and AKsKs = -0.38+/-0.38+/-0.05, where the first and second errors are statistical and systematic, respectively.

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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