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arXiv 1301.2033hep-ex
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粲B衰变中直接CP的研究和Belle的CKM角γ的测量

Study of direct CP in charmed B decays and measurement of the CKM angle gamma at Belle

K. Trabelsi

摘要:

贝尔实验在本世纪头十年在KEKB的e^+ e^-不对称能量对撞机上运行,在4S共振处记录了770 fb^-1的数据。使用该样品获得的最近Belle结果的组合来执行CKM角度γ的测量。我们使用B^+- -> DK^+-和B^+- -> D^*K^+-衰变,其中D介子衰变为K_S^0 π + π-、Kpi、KK、pipi、K_S^0 π ^0和K_S^0 η终态,D^* 衰变为Dpi ^0和Dgamma。Belle获得了迄今为止最精确的伽马测量,伽马=(68^{+15}_{-14})度。

英文摘要:

The Belle experiment, running at the KEKB e^+ e^- asymmetric energy collider during the first decade of the century, has recorded 770 fb^-1 of data at the Upsilon(4S) resonance. A combination of recent Belle results obtained with this sample is used to perform a measurement of the CKM angle gamma. We use B^+- -> DK^+- and B^+- -> D^*K^+- decays where the D meson decays into K_S^0pi+pi-, Kpi, KK, pipi, K_S^0 pi^0 and K_S^0 eta final states and D^* decays into Dpi^0 and Dgamma. Belle obtains the most precise gamma measurement to date, gamma = (68^{+15}_{-14}) degree.

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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