Testing the scale dependence of the scale factor σ eff in double dijet production at the LHC Svend Domdey, Hans-Jürgen Pirner and Urs Achim Wiedemann Eur. Phys. J. C, 65 1-2 (2010) 153-162 Published online: 19 November 2009 DOI: 10.1140/epjc/s10052-009-1198-5