https://doi.org/10.1140/epjc/s10052-012-1953-x
Regular Article - Theoretical Physics
QCD factorization for forward hadron scattering at high energies
1
Ioffe Physico-Technical Institute, 194021, St. Petersburg, Russia
2
Department of Physics and INFN, University Roma Tre, Rome, Italy
3
St. Petersburg Institute of Nuclear Physics, 188300, Gatchina, Russia
* e-mail: boris.ermolaev@cern.ch
Received:
17
January
2012
Revised:
27
February
2012
Published online:
23
March
2012
We consider the QCD factorization of DIS structure functions at small x and amplitudes of 2→2 hadronic forward scattering at high energy. We show that both collinear and k T -factorization for these processes can be obtained approximately as reductions of a more general (totally unintegrated) form of the factorization. The requirement of ultraviolet and infrared stability of the factorization convolutions allows us to obtain restrictions on the fits for the parton distributions in k T - and collinear factorization.
© Springer-Verlag / Società Italiana di Fisica, 2012
