Irreducible part of the next-to-leading BFKL kernel

Details Irreducible part of the next-to-leading BFKL kernel Irreducible part of the next-to-leading BFKL kernel

1997-07-18

arxiv.org/abs/hep-ph/9707390v1

Phys.Lett. B412 (1997) 396-406; Erratum-ibid. B417 (1998) 390

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, LaTex2e, including 3 eps figures

Scientific paper

10.1016/S0370-2693(97)01073-3

On the basis of previous work by Fadin, Lipatov, and collaborators, and of our group, we extract the "irreducible" part of the next-to-leading (NL) BFKL kernel, we compute its (IR finite) eigenvalue function, and we discuss its implications for small-x structure functions. We find consistent running coupling effects and sizable NL corrections to the Pomeron intercept and to the gluon anomalous dimension. The qualitative effect of such corrections is to smooth out the small-x rise of structure functions at low values of Q2. A more quantitative analysis will be possible after the extraction of some additional, energy-scale dependent contributions to the kernel, which are not treated here.

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