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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1503.00160hep-ex
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在LHC b的$D^0\rightarrow π^-π^+π^0$衰变中寻找$CP$破坏

Search for $CP$ violation in $D^0\rightarrow π^-π^+π^0$ decays at LHCb

Shanzhen Chen

摘要:

LHCb实验记录了世界上最大的粲介子衰变样本。本文研究了LHCb中$D^0$介子衰变到含有中性π介子的末态。对$CP$违反的搜索利用了一种新的独立于模型的未分组技术来为无$CP$违反假设分配$p$值。随着数据样本量超过以前的测量几乎一个数量级的世界上最好的灵敏度获得。给出$D^0\rightarrow π^-π^+π^0$衰变分析数据,发现无CP破坏假设的$p$值为$(2.6 \pm 0.5)\times 10^-2$。

英文摘要:

The LHCb experiment has recorded the world's largest sample of charmed meson decays. This paper presents a study of a $D^0$ meson decaying into a final state containing a neutral pion in LHCb. The search for $CP$ violation exploits a novel model-independent unbinned technique to assign a $p$-value for the no $CP$ violation hypothesis. With a data sample size exceeding that of previous measurements by almost an order of magnitude the world's best sensitivity is obtained. The $p$-value of no CP violation hypothesis given data of $D^0\rightarrow π^-π^+π^0$ decay analysed is found to be $(2.6 \pm 0.5)\times 10^-2$.

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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