确定$α_s(M_τ^2)$:保角映射方法
Determination of $α_s(M_τ^2)$: a conformal mapping approach
摘要:
基于Borel平面的共形映射技术,讨论了微扰QCD中的一类新展开式,并将其应用于由$τ$轻子的强子衰变确定$α_s$.在$\bar{\rm MS}$方案中使用五阶展开,该方法导致预测$α_s(M_τ^2)= 0.320\pm 0.011$。
英文摘要:
We discuss a new class of expansions in perturbative QCD, based on the technique of conformal mappings of the Borel plane, and apply them for the determination of $α_s$ from the hadronic decays of the $τ$ lepton. Using the expansion up to fifth order in the $\bar{\rm MS}$ scheme, the method leads to the prediction $α_s(M_τ^2)= 0.320\pm 0.011$.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。