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arXiv 1011.5477hep-ex
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在衰减D+/-> Ks pi+/-中搜索CP破坏

Search for CP Violation in the Decay D+/- -> Ks pi+/-

The BABAR Collaboration, P. del Amo Sanchez

摘要:

本文报道了在PEP-Ⅱ非对称能量$e^+e^-$储存环上用\slshape B \kern -0.1em{ \smaller A} \kern-0.1em B \kern-0.1em { \smaller A \kern -0.2em R}探测器收集的$ D^\pm \to K^0_{\scriptscriptstyle S} π^\pm $衰变的CP破坏数据。CP破坏衰变率不对称性$A_{CP}$被确定为$(-0.44 \pm 0.13 \mathrm{(stat)} \pm 0.10 \mathrm{(syst)})%$,在2.7 $σ$处与零一致,并且与标准模型预测的$(-0.332 \pm 0.006)%$一致。这是目前对该参数最精确的测量。

英文摘要:

We report on a search for CP violation in the decay $ D^\pm \to K^0_{\scriptscriptstyle S} π^\pm $ using a data set corresponding to an integrated luminosity of $ 469\,\,fb^{-1} $ collected with the \slshape B\kern-0.1em{\smaller A}\kern-0.1em B\kern-0.1em{\smaller A\kern-0.2em R} detector at the PEP-II asymmetric energy $e^+e^-$ storage rings. The CPviolating decay rate asymmetry $A_{CP}$ is determined to be $(-0.44 \pm 0.13 \mathrm{(stat)} \pm 0.10 \mathrm{(syst)})%$, consistent with zero at 2.7 $σ$ and with the standard model prediction of $(-0.332 \pm 0.006)%$. This is currently the most precise measurement of this parameter.

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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