Constraints on gluon evolution at small x

J. Kwiecinski; A. D. Martin; P. J. Sutton

doi:10.1007/BF02907019

paper

Constraints on gluon evolution at small x

arXiv:hep-ph/9602320 · doi:10.1007/BF02907019

Abstract

The BFKL and the unified angular-ordered equations are solved to determine the gluon distribution at small $x$ . The impact of kinematic constraints is investigated. Predictions are made for observables sensitive to the gluon at small $x$ . In particular comparison is made with measurements at the HERA electron-proton collider of the proton structure function $F_{2} (x, Q^{2})$ as a function of $ln Q^{2}$ , the charm component, $F_{2}^{c} (x, Q^{2})$ and diffractive $J / ψ$ photoproduction.

17 LaTeX pages and 9 postscript figures