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arXiv · hep-ph/9411379

The Spectrum of the O(g^4) scale-invariant Lipatov Kernel

Claudio Coriano'·Alan R. White
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Abstract

The scale-invariant $O(g^4)$ Lipatov kernel has been determined by t-channel unitarity. The forward kernel responsible for parton evolution is evaluated and its eigenvalue spectrum determined. In addition to a logarithmic modification of the $O(g^2)$ kernel a distinct new kinematic component appears. This component is infra-red finite without regularization and has the holomorphic factorization property necessary for conformal invariance. It gives a reduction (of ~$\sim 65α_s^2/π^2\sim 0.15$) in the power growth of parton distributions at small-x.

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Claudio Coriano', Alan R. White. 1994-11-25. The Spectrum of the O(g^4) scale-invariant Lipatov Kernel. https://doi.org/10.1103/physrevlett.74.4980

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