Particularities of the NNLLA BFKL
classification
✦ hep-ph
hep-th
keywords
bfklamplitudesapproximationnnllaaccountapproachbecausechanged
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Peculiar properties of the BFKL approach in the next-to-next-to-leading logarithmic approximation (NNLLA) are discussed. In this approximation the scheme of derivation of the BFKL equation must be changed because of violation of the simple factorized form of amplitudes with multi-Reggeon exchanges and necessity to take into account imaginary parts of amplitudes in the unitarity relations.
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