论文标题
$ cp $ dymmetries的测量在$ d^+_ {（s）} \ rightarrowηπ^+$和$ d^+_ {（s）} \ rightarrowη^{\ prime}π^+$衰减
Measurement of $CP$ asymmetries in $D^+_{(s)}\rightarrow ηπ^+$ and $D^+_{(s)}\rightarrow η^{\prime} π^+$ decays
论文作者
论文摘要
搜索$ cp $违规中的$ d^+_ {（s）} \rightArrowηπ^+$和$ d^+_ {（s）} \ rightArrowη^{\ prime}π^+$使用$ pp $ collision数据对应于6 fb $^{ - 1} um um unin colted lh colted lh colted unin。校准通道$ d^+_ {（s）} \ rightarrow ϕπ^+$用于删除生产和检测不对称。由此产生的$ cp $侵略不对称是 美元 美元 美元 美元 如果第一个不确定性是统计的，则第二个是系统的，第三个与$ d^+$通道有关，是由于$ a^{cp}（d^+\ to ϕπ^+）$的不确定性所致。这些测量值是目前考虑的四个渠道中最精确的测量值，与没有$ CP $违规的情况是一致的。提出了这些结果与先前的LHCB测量结果的组合。
Searches for $CP$ violation in the decays $D^+_{(s)}\rightarrow ηπ^+$ and $D^+_{(s)}\rightarrow η^{\prime} π^+$ are performed using $pp$ collision data corresponding to 6 fb$^{-1}$ of integrated luminosity collected by the LHCb experiment. The calibration channels $D^+_{(s)}\rightarrow ϕπ^+$ are used to remove production and detection asymmetries. The resulting $CP$-violating asymmetries are $A^{CP}(D^+ \rightarrow ηπ^+) = (0.34 \pm 0.66 \pm 0.16 \pm 0.05)\%$, $A^{CP}(D^+_s \rightarrow ηπ^+) = (0.32 \pm 0.51 \pm 0.12)\%$, $A^{CP}(D^+ \rightarrow η^{\prime} π^+) = (0.49 \pm 0.18 \pm 0.06 \pm 0.05)\%$, $A^{CP}(D^+_s \rightarrow η^{\prime} π^+) = (0.01 \pm 0.12 \pm 0.08)\%$, where the first uncertainty is statistical, the second is systematic and the third, relevant for the $D^+$ channels, is due to the uncertainty on $A^{CP}(D^+ \to ϕπ^+)$. These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of $CP$ violation. A combination of these results with previous LHCb measurements is presented.
