NLO BFKL in gamma* gamma* collisions

Details NLO BFKL in gamma* gamma* collisions NLO BFKL in gamma* gamma* collisions

2008-11-26

arxiv.org/abs/0811.4301v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contribution to the proceedings of "Diffraction 2008", La Londe-les-Maures (France), 9-14 Sep. 2008; 4 pages, latex, aicproc f

Scientific paper

10.1063/1.3122203

We study in the BFKL approach the total hadronic cross section for the collision of two virtual photons for energies in the range of LEP2 and of future linear colliders. The BFKL resummation is done at the next-to-leading order in the BFKL Green's function; photon impact factors are taken instead at the leading order, but with the inclusion of the subleading terms required by invariance under changes of the renormalization scale and of the BFKL scale $s_0$. We compare our results with previous estimations based on a similar kind of approximation.

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