$D_s^+ \to \eta(\eta^\prime) X$ 衰变包含性分支比的测量
Measurements of the inclusive Branching fractions of the $D_s^+ \to η(η^\prime) X$ decays
浏览论文内容
中文总结 AI 辅助
基于BESIII数据，精确测量了$D_s^+$介子到$\eta$和$\eta^\prime$的包含性衰变分支比，结果与CLEO一致且精度显著提升。
中文摘要 AI 辅助
利用BESIII探测器在质心能量4.128至4.226 GeV之间收集的$e^+ e^-$碰撞数据，对应积分亮度为$7.33~{\rm fb}^{-1}$，测量了衰变$D_s^+ \to \eta X$和$D_s^+ \to \eta^\prime X$（$X$表示任意可能的粒子）的包含性分支比，分别为$(30.72 \pm 0.90 \pm 0.46)\\%$和$(12.30 \pm 0.94 \pm 0.37)\\%$，其中第一项不确定度为统计误差，第二项为系统误差。结果与之前CLEO的测量一致，$D_s^+ \to \eta X$和$D_s^+ \to \eta^\prime X$的精度分别提高了2.8倍和1.9倍。
英文摘要
Using $e^+ e^-$ collision data collected with the BESIII detector at center-of-mass energies between $4.128$ and $4.226$ GeV, corresponding to an integrated luminosity of $7.33~{\rm fb}^{-1}$, the inclusive branching fractions of the decays $D_s^+ \to ηX$ and $D_s^+ \to η^\prime X$ ($X$ denotes any possible particles) are measured to be $(30.72 \pm 0.90 \pm 0.46)\%$ and $(12.30 \pm 0.94 \pm 0.37)\%$, where the first uncertainties are statistical and the second systematic. The results are consistent with the previous CLEO measurements, with precision improved by factors of 2.8 and 1.9 for $D_s^+ \to ηX$ and $D_s^+ \to η^\prime X$, respectively.
