Traveling waves and geometric scaling at nonzero momentum transfer Original Research Article

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/qΩs(Y), where Ωs(Y) has the same energy dependence as in the forward analysis space. Consequences for phenomenology are drawn.