BFKL resummation effects in gamma* gamma* --> rho rho
High Energy Physics - Phenomenology
2014-11-18 v3
Abstract
We calculate the leading order BFKL amplitude for the exclusive diffractive process \gamma*_L(Q1^2) \gamma*_L(Q2^2) \to \rho_L^0 \rho_L^0 in the forward direction, which can be studied in future high energy e^+e^- linear colliders. The resummation effects are very large compared to the fixed-order calculation. We also estimate the next-to-leading logarithmic corrections to the amplitude by using a specific resummation of higher order effects and find a substantial growth with energy, but smaller than in the leading logarithmic approximation.
Keywords
Cite
@article{arxiv.hep-ph/0508134,
title = {BFKL resummation effects in gamma* gamma* --> rho rho},
author = {R. Enberg and B. Pire and L. Szymanowski and S. Wallon},
journal= {arXiv preprint arXiv:hep-ph/0508134},
year = {2014}
}
Comments
23 pages, 13 figures. Numerical bug affecting plots in Figs 12 and 13 corrected