Unintegrated parton distributions and inclusive jet productionat HERA
Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE, UK
2 Petersburg Nuclear Physics Institute, 188300, Gatchina, St. Petersburg, Russia
We describe how unintegrated parton distributions can be calculated from conventional integrated distributions. We extend and improve the “last-step” evolution approach, and explain why doubly unintegrated parton distributions are necessary. We generalise k t-factorisation to (z,k t)-factorisation. We apply the formalism to inclusive jet production in deep-inelastic scattering, mainly at leading order, but we also study the extension to next-to-leading order. We compare the predictions with recent HERA data.
© Springer-Verlag, 2003