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Reggeon cuts in QCD amplitudes with negative signature

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arxiv 1712.09805 v3 pith:T2BMV2BW submitted 2017-12-28 hep-ph

Reggeon cuts in QCD amplitudes with negative signature

classification hep-ph
keywords cutsamplitudesapproximationnegativereggeonsignatureappearappearance
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Reggeon cuts in QCD amplitudes with negative signature are discussed. These cuts appear in the next-to-next-to-leading logarithmic approximation (NNLLA) and greatly complicate the derivation of the BFKL equation. Feynman diagrams responsible for appearance of these cuts are indicated and the cut contributions are calculated in the two- and three-loop approximation.

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