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arXiv 0802.4222hep-ex
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D^+对eta e^+ nu_e的观测

Observation of D^+ to eta e^+ nu_e

CLEO Collaboration, R. E. Mitchell

摘要:

利用康奈尔电子储存环上的CLEO-c探测器在psi(3770)共振下收集的281 pb^-1数据样本,我们报告了D^+到eta e^+ nu_e的首次观测结果。我们还设定了D^+对eta' e^+ nu_e和D^+对phi e^+ nu_e的上限,这比以前的实验所得到的限制要大两个数量级。

英文摘要:

Using a 281 pb^-1 data sample collected at the psi(3770) resonance with the CLEO-c detector at the Cornell Electron Storage Ring, we report the first observation of D^+ to eta e^+ nu_e. We also set upper limits for D^+ to eta' e^+ nu_e and D^+ to phi e^+ nu_e that are about two orders of magnitude more restrictive than those obtained by previous experiments.

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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