论文标题
charmonia衰减的描述$ j/ψ\ rightarrow b \ bar b $在QCD分解框架内
A description of charmonia decays $J/ψ\rightarrow B\bar B$ within the QCD factorisation framework
论文作者
论文摘要
在QCD分解框架内研究了损坏$ j/ψ\ to b \ bar b $进入八位骨 - antibaryons对。首次计算到领先衰减振幅的次核能校正。现象学分析还包括干扰电磁衰减$ j/ψ\toγ^*\ to b \ bar b $。分支分数和角系数$α_b$的精度约为20美元\％$。获得的结果使我们得出结论，计算出的幅度提供了主要的贡献，因此QCD分解为理解这些衰减提供了适当的基础。
Decays $J/ψ\to B\bar B$ into octet baryon-antibaryons pairs are studied within the QCD factorisation framework. The next-to-leading power correction to the leading-order decay amplitude is calculated for the first time. The phenomenological analysis also includes the interference with the electromagnetic decay $J/ψ\to γ^*\to B\bar B$. The branching fractions and the angular coefficients $α_B$ are described with an accuracy of about $20\%$. The obtained results allow us to conclude that the calculated amplitudes provide a dominant contribution and therefore QCD factorisation provides a suitable basis for understanding of these decays.
