English

The BFKL high energy asymptotics in the next-to-leading approximation

High Energy Physics - Phenomenology 2009-10-31 v2

Abstract

We discuss the high energy asymptotics in the next-to-leading (NLO) BFKL equation. We find a general solution for Green functions and consider two properties of the NLO BFKL kernel: running QCD coupling and large NLO corrections to the conformal part of the kernel. Both of these effects lead to Regge-BFKL asymptotics only in the limited range of energy (y=ln(s/qq0)(\as)5/3y = \ln(s/q q_0) \leq (\as)^{- {5/3}}) and change the energy behaviour of the amplitude for higher values of energy. We confirm the oscillation in the total cross section found in Ref. \cite{ROSS} in the NLO BFKL asymptotics, which shows that the NLO BFKL has a serious pathology.

Keywords

Cite

@article{arxiv.hep-ph/9806228,
  title  = {The BFKL high energy asymptotics in the next-to-leading approximation},
  author = {Eugene Levin},
  journal= {arXiv preprint arXiv:hep-ph/9806228},
  year   = {2009}
}

Comments

20 pp, latex file, two references and footnote added