Two-Jet Rate in e^{+}e^{-} at Next-to-Next-to-Leading-Logarithmic Order.
Two-Jet Rate in e^{+}e^{-} at Next-to-Next-to-Leading-Logarithmic Order.
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DOI：
10.1103/physrevlett.117.172001
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发表时间：
2016-07
影响因子：
8.6
通讯作者：
A. Banfi;H. Mcaslan;P. Monni;G. Zanderighi
中科院分区：
文献类型：
--
作者：
A. Banfi;H. Mcaslan;P. Monni;G. Zanderighi
我们在达勒姆和剑桥算法中提出了 e^{+}e^{-} 湮灭中双射流速率的第一个次对数恢复。结果是通过将 ares 方法扩展到涉及 e^{+}e^{-} 碰撞中任何全局、递归红外和共线安全喷射算法的可观测值而获得的。与其他方法相反，这种方法不需要可观测量的因式分解定理。我们提出了与倒数第二领先顺序相匹配的预测以及与 LEP 数据的比较。
We present the first next-to-next-to-leading-logarithmic resummation for the two-jet rate in e^{+}e^{-} annihilation in the Durham and Cambridge algorithms. The results are obtained by extending the ares method to observables involving any global, recursively infrared and collinear safe jet algorithm in e^{+}e^{-} collisions. As opposed to other methods, this approach does not require a factorization theorem for the observables. We present predictions matched to next-to-next-to-leading order and a comparison to LEP data.