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arXiv 1504.02540hep-ph
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次次领头阶的N-抖动软函数

The N-jettiness soft function at next-to-next-to-leading order

Radja Boughezal, Xiaohui Liu, Frank Petriello

摘要:

本文给出了一个在强耦合常数下通过次次领头阶(NNLO)计算SCET_I观测量软函数的一般框架。作为我们的形式主义的一个例子,我们展示了如何可以用来获得完整的NNLO软函数的$N$ jettiness事件形状变量。我们给出了两个具有唯象影响的例子的数值结果:电子-质子和质子-质子碰撞的单jettiness软函数。

英文摘要:

We present a general framework for the calculation of soft functions for SCET_I observables through next-to-next-to-leading order (NNLO) in the strong coupling constant. As an example of our formalism we show how it can be used to obtain the complete NNLO soft function for the $N$-jettiness event shape variable. We present numerical results for two examples with phenomenological impact: the one-jettiness soft function for both electron-proton and proton-proton collisions.

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。

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