标题： Atlas-LHC中通过Lambda0 J/psi衰变通道测量美丽重子极化的可行性 显示英文标题

标题： Feasibility of Beauty Baryon Polarization Measurement in Lambda0 J/psi Decay Channel by Atlas-LHC

摘要： 通过级联衰变角度分布分析在Λ0 J/psi → p π- l+ l- 通道中演示了测量美丽重子极化的可能性。 误差分析表明，在提出的LHC实验ATLAS中，在亮度$10^{4} pb^{-1}$下，对于Λ_b0 的极化可以以统计精度优于$\delta=0.010$进行测量，对于Ξ_b0 的极化可以以统计精度优于$\delta=0.17$进行测量。 显示英文摘要

摘要： The possibility of beauty baryon polarization measurement by cascade decay angular distribution analysis in the channel Lambda0 J/psi --> p pi- l+ l- is demonstrated. The error analysis shows that in the proposed LHC experiment ATLAS at the luminosity $10^{4} pb^{-1}$ the polarization can be measured with the statistical precision better than $\delta=0.010$ for Lambda_b0 and $\delta=0.17$ for Xi_b0.