BFKL resummation effects in gamma* gamma* --> rho rho

Abstract

We calculate the leading order BFKL amplitude for the exclusive diffractive process γ*_L(Q1^2) γ*_L(Q2^2) \to ρ_L^0 ρ_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.

23 pages, 13 figures. Numerical bug affecting plots in Figs 12 and 13 corrected

References in corpus (1)

• Electroproduction of two light vector mesons in the next-to-leading approximation

Cited by in corpus (5)

• Mueller Navelet jets at LHC - complete NLL BFKL calculation
• Saturation effects in exclusive rhoT, rhoL meson electroproduction
• Collinear improvement of the BFKL kernel in the electroproduction of two light vector mesons
• BFKL resummation effects in the gamma* gamma* total hadronic cross section
• Double vector meson production in the International Linear Collider