期刊
PHYSICS LETTERS B
卷 732, 期 -, 页码 233-240出版社
ELSEVIER
DOI: 10.1016/j.physletb.2014.03.033
关键词
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资金
- MIUR (Italy) [2006020509_004, 2010YJ2NYW_006]
- Research Executive Agency (REA) of the European Union, through the Initial Training Network LHCPhe-noNet [PITN-GA-2010-264564]
- ERC [291377]
- CERN
- NIKHEF
- Higgs Center for Theoretical Physics at the University of Edinburgh
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. (C) 2014 The Authors. Published by Elsevier B.V.
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