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arXiv 0910.0124hep-ex
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Belle核辐射B介子衰变

Exclusive Radiative B meson decays at Belle

H. Sahoo

摘要:

本文讨论了Belle合作组最近关于B介子辐射衰变的研究结果。这些衰变对新物理学中的右手电流很敏感。特别地,我们测量了B^0->K_Sπ^0γ和B^0->K_Sρ^0γ衰变中与时间相关的CP破坏参数,使用的是KEKB非对称能量e^+e^-对撞机Belle探测器在Y(4S)共振处收集的高统计数据样本。根据目前的统计数据,这些测量结果与标准模型的预测是一致的。我们还搜索了辐射衰变B^0-> \phiK^0 γ,并报告了第一个显著性为5.4 σ的观测结果,包括系统不确定性。

英文摘要:

In this proceeding, we discuss recent results on exclusive radiative B meson decays from the Belle Collaboration. These decays are sensitive to right-handed currents from New Physics. In particular, we measure time-dependent CP violation parameters in B^0->K_Sπ^0γand B^0->K_Sρ^0γdecays, using high-statistics data samples collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. With the present statistics, these measurements are consistent with the standard model predictions. We also search for the radiative decay B^0->\phiK^0γand report the first observation with a significance of 5.4 σ, including systematic uncertainties.

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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