Traveling waves and geometric scaling at nonzero momentum transfer

摘要

We extend the search for traveling-wave asymptotic solutions of the nonlinear Balitsky-Kovchegov (BK) saturation equation to non-forward dipole-target amplitudes. Making use of conformal invariant properties of the Balitsky-Fadin-Kuraev-Lipatov (BFKL) kernel, we exhibit traveling-wave solutions in momentum space in the region where the momentum transfer q is smaller than the characteristic scale Q of the projectile. We prove geometric scaling in the variable Q/q Omega(S)(Y), where Omega(S)(Y) has the same energy dependence as in the forward analysis space. Consequences for phenomenology are drawn. (c) 2005 Elsevier B.V. All rights reserved.