BFKL versus HERA

The BFKL equation and the kT-factorization theorem are used to obtain predictions for F2 in the small Bjorken-x region over a wide range of Q**2. The dependence on the parameters, especially on those concerning the infrared region, is discussed. After a background fit to recent experimental data obtained at HERA and at Fermilab (E665 experiment), we find that the predicted, almost Q**2 independent BFKL slope lambda >= 0.5 appears to be too steep at lower Q**2 values. Thus there seems to be a chance that future HERA data can distinguish between pure BFKL and conventional field theoretic renormalization group approaches.Comment: 26 pages, 6 eps figures, LaTeX2e using epsfig.sty and amssymb.st

Truncated Moments and A Generalization of Dglap Equations

We present progress in development of a cut (truncated) Mellin moments (TMM) approach that is constructed to study deep inelastic scattering in lepton-hadron collisions at the natural kinematic constraints. Appropriate classes of TMM for the available experimental kinematic range are discussed. We review some applications of the TMM approach

Truncated Moments in Analysis of Deep-Inelastic Structure Functions of the Nucleon

We present evolution of the Truncated Mellin Moments (TMM) of the parton distributions and structure functions. We illustrate the x and Q2 dependence of the TMM for the polarized case in LO and NLO approximation. We compare the truncated integrals of g1 with COMPASS data

Truncated Moments in Analysis of Deep-Inelastic Structure Functions of the Nucleon

We present evolution of the Truncated Mellin Moments (TMM) of the parton distributions and structure functions. We illustrate the x and Q2 dependence of the TMM for the polarized case in LO and NLO approximation. We compare the truncated integrals of g1 with COMPASS data

Truncated Moments and A Generalization of Dglap Equations

We present progress in development of a cut (truncated) Mellin moments (TMM) approach that is constructed to study deep inelastic scattering in lepton-hadron collisions at the natural kinematic constraints. Appropriate classes of TMM for the available experimental kinematic range are discussed. We review some applications of the TMM approach

The Gluon density of the proton at low x from a QCD analysis of F2

We present a QCD analysis of the proton structure function $F_2$ measured by the H1 experiment at HERA, combined with data from previous fixed target experiments. The gluon density is extracted from the scaling violations of $F_2$ in the range $2\cdot 10^{-4}<x<3\cdot 10^{-2}$ and compared with an approximate solution of the QCD evolution equations. The gluon density is found to rise steeply with decreasing $x$.Comment: 17 pages, latex2e, 5 figures appended as uuencoded file, hep number include