High-energy QCD amplitudes at two loops and beyond
High-energy QCD amplitudes at two loops and beyond
复制标题
两个环路及以上的高能 QCD 振幅
DOI:
10.1016/j.physletb.2014.03.033
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发表时间:
2013
影响因子:
4.4
通讯作者:
L. Vernazza
中科院分区:
文献类型:
--
作者:
V. Duca;G. Falcioni;L. Magnea;L. Vernazza
Recent progress in our understanding of infrared singularities of multi-parton amplitudes has shown that the simplest form of Regge factorization for high-energy gauge-theory amplitudes fails starting at next-to-next-to-leading logarithmic accuracy. We provide a framework to organize the calculation of parton amplitudes at leading power in t/s, in terms of factorizing and non-factorizing contributions. This allows us to give explicit expressions for the leading reggeization-breaking terms in two-loop and three-loop quark and gluon amplitudes in QCD. In particular, using only infrared information, we recover a known non-factorizing, non-logarithmic double-pole contribution at two-loops, and we compute the leading non-factorizing single-logarithmic contributions at three loops.
影响因子:
5
作者:
Del Duca V
通讯作者:
Del Duca V
影响因子:
5.4
作者:
Del Duca V
通讯作者:
Del Duca V
影响因子:
5.4
作者:
Valentin Ahrens;M. Neubert;L. Vernazza
通讯作者:
Valentin Ahrens;M. Neubert;L. Vernazza