26-30 March 2012
University of Bonn
Europe/Berlin timezone

Using the BFKL resummation to fit DIS data: collinear and running coupling effects

27 Mar 2012, 15:05
Wolfgang Paul Lecture Hall (University of Bonn)

Wolfgang Paul Lecture Hall

University of Bonn

Kreuzbergweg 28, 53115 Bonn, Germany,
Structure functions Structure functions


Clara Salas (IFT, Madrid)


The proton structure function F_2 is studied in the low x regime using BFKL evolution instead of the usual DGLAP approach, suited for large values of the DIS x variable. The NLL analysis requires the inclusion of running coupling effects which lead to off-diagonal terms in the BFKL kernel that need to be treated carefully. We also introduce an all-orders resummation that improves the collinear behavior of the NLL BFKL result. This study is presented emphasizing the theoretical uncertainties that appear throughout the analysis and a comparison with the combined HERA data is given.

Primary authors

Agustin Sabio Vera Clara Salas (IFT, Madrid) Grigorios Chachamis (Paul Scherrer Institut) Martin Hentschinski (Autonoma University Madrid/CSIC)

Presentation Materials