Unintegrated gluon distribution from the Ciafaloni-Catani-Fiorani-Marchesini equation

The gluon distribution f(x, k(t)(2), mu (2)), unintegrated over the transverse momentum k, of the gluon, satisfies the angular-ordered CCFM equation which interlocks the dependence on the scale k, with the scale mu of the probe. We show how, to leading logarithmic accuracy, the equation can be simplified to a single-scale problem. In particular we demonstrate how to determine the two-scale unintegrated distribution f(x, k(t)(2), mu (2)) from knowledge of the integrated gluon obtained from a unified scheme embodying both BFKL [log(1/x)] and DGLAP (log mu (2)) evolution.