论文标题
使用$ b_ {s}^{0} \ to j/ψη$衰减模式的$τ_{l} $的测量
Measurement of $τ_{L}$ using the $B_{s}^{0} \to J/ψη$ decay mode
论文作者
论文摘要
使用LHCB检测器收集的Proton-Proton碰撞数据样本，并对应于5.7 $ \ text {fb}^{ - 1} $的集成亮度，$ b_ {s}^{0} $ s eigenstate，$ wistate，$ ws {l} $ j {s} $ a} $ j} $ j {0衰减模式为$τ_{l} $ = 1.445 $ \ pm $ 0.016（stat）$ \ pm $ 0.008（syst）ps。该结果与以前的LHCB分析相结合，使用独立数据集，该数据集对应于3 $ \ text {fb}^{ - 1} $的集成发光度给出$τ_{l} $ = 1.452 $ = 1.452 $ \ pm $ 0.014 $ \ pm \ pm $ 0.007第三，由于系统不确定性的相关部分。
Using a proton-proton collision data sample collected by the LHCb detector and corresponding to an integrated luminosity of 5.7 $\text{fb}^{-1}$, the lifetime of the $B_{s}^{0}$ mass eigenstate, $τ_{L}$, is measured using $B_{s}^{0} \to J/ψη$ decay mode to be $τ_{L}$ = 1.445 $\pm$ 0.016(stat) $\pm$ 0.008(syst) ps. A combination of this result with a previous LHCb analysis using an independent dataset corresponding to 3 $\text{fb}^{-1}$ of integrated luminosity gives $τ_{L}$ = 1.452 $\pm$ 0.014 $\pm$ 0.007 $\pm$ 0.002 ps, where the first uncertainty is statistical, the second due to the uncorrelated part of the systematic uncertainty and the third due to the correlated part of the systematic uncertainty.
