We present calculations of structure functions using a renormalization scheme consistent expansion which is leading order in both ln(1/x) and αs(Q ). There is no factorization scheme dependence, and the “physical anomalous dimensions” of Catani naturally appear. A relationship between the small x forms of the inputs F2(x,Q 2 0) and FL(x,Q 2 0) is predicted. Analysis of a very wide range of data...

Prompt photon production has been known to be a sensitive probe to the gluon luminosity inside a hadron because it is mainly produced by quark-gluon scattering. For the same reason prompt photon production should also be sensitive to the anomalous couplings of gluons to quarks. We will examine the effects of two specific anomalous couplings – chromoelectric and chromomagnetic dipole moments of ...