Title: "Analytical Description of the Proton Structure Functions in the Whole Kinematic Region" Author: D.A.Timashkov, Moscow Engineering Physics Institute Abstract: A new approach based on a search of analytic solutions for the main limiting cases and linking functions describing intermediate regions is developed. This approach has allowed to connect existing models and to obtain expression for the whole kinematic region. In frame of this work analytical formulas for proton form factors in the limiting cases (quasielastic scattering, photoproduction and low-x limit) have been obtained. Connections and transitions between these limiting cases have been studied and linking functions have been found. The obtained dependencies of proton structure functions for the whole kinematic region of variables Q^2 and x have practically no free parameters but they are in a good agreement with experimental data for photoproduction, electron and muon inelastic scattering on proton. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Stefano Capitani Status of lattice structure function calculations Abstract: Lattice QCD allows computations of moments of structure functions from first principles. An overview of the present status of the calculations is given. Recent results and future perspectives are discussed. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Dimitri Colferai TITLE: Jets at high energies: factorization and jet vertex in NL log(s) approximation. ABSTRACT: The next-to-leading corrections to the jet vertex which is relevant for the Mueller-Navelet jets production in hadronic collisions and for the forward jet cross section in lepton-hadron collisions are presented in the context of a k_t factorizazion formula which resums the leading and next-to-leading logarithms of the energy. Both the quark- and gluon-initiated contribution are now computed. This completes the framework for a full phenomenological analysis of Mueller-Navelet jets in NL log(s) approximation. Forward jets phenomenology still requires the NL photon impact factor. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% A.V. Kotikov, BLThPh, JINR, Dubna, Russia Title of my talk: QCD coupling constant value and the structure function F2 measurements Abstract: The deep inelastic scattering data of BCDMS Collaboration have been reanalyzed by including proper cuts of ranges with large systematic errors. The fits of high statistic deep inelastic scattering data of BCDMS, SLAC, NM and BFP Collaborations have been performed taking the data separately and in combined way and a good agreement between these analyses has been found. The values of both the QCD coupling constant up to NLO level and of the power corrections to the structure function F2 have been extracted. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin McDermott "Generalised parton distributions at next-to-leading order" The talk will be based on the paper: A. Freund and M. McDermott, "Next-to-leading order evolution of generalised parton distributions for DESY HERA and HERMES". %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Przybycien Measurement of the Hadronic Photon Structure Function F2gamma at LEP2. This measurement has very recently been published, and represents the highest Q2 reach, and best precision for the high Q2 domain, from OPAL. Data up to the highest energies were used, and the results can therefore be regarded as the final word from OPAL on the high Q2 photon structure function. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Albert De Roeck Isolated Prompt Photon Production in Photon-Photon Collisions at sqrt(s)_ee=183-209 GeV. These first and so far only LEP results on prompt photon production in two-photon collisions were presented at the Photon 2001 conference. This process is sensitive to the structure of the photon, and is complimentary to the jet measurements. Since Photon 2001 the first NLO calculation has become available, and is found to be in good agreement with the data, while the MC generator Pythia predicts a cross section which is too low by a factor of about two. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Andreas Freund "F^A_2(x,Q^2) and nuclear shadowing in non-linear pQCD" The talk will be based on very recent numerical solutions of the JIMWLK small-x RGE which can be readily extended to the case of nuclei. This is of great interest in light of the EIC project at BNL and the HERA III project as well as comparing our results to, for example, the leading twist approach to nuclear shadowing in deep inelatics electron-nucleus collisions. If Heribert Weigert is unable to attend DIS2002, I would then propose to give an overview talk and discuss the exact numrical reults for F^p_2 and F^A_2 in less detail. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Tomas Lastovicka Title: Self-similar Properties of the Proton Structure at low ${\mathbf x}$ Abstract: Self-similar properties of proton structure in the kinematic region of low Bjorken $x$ are introduced and studied numerically. A simple description of the proton structure function $ F_{2}(x,Q^2)\,$ reflecting self-similarity is proposed with a few parameters which are fitted to recent HERA data. The specific parameterization provides an excellent description of the data which cover a region of four momentum transfer squared, \mbox{$0.045 \le Q^2 \le 120~\GeV^2$}, and of Bjorken $x$, \mbox{$6.2 \cdot 10^{-7} \le x \le 0.01$ }. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Gabriela Miu Title: Unintegrated Structure Functions in DIS Abstract: At small x, the effects of finite transverse momenta of the partons become important in analyses of jets and heavy quark production. These effects can be systematically treated in a formalism based on kT-factorization and unintegrated structure functions. We present results for the unintegrated gluon structure function obtained within the framework of the Linked Dipole Chain Model (LDC). We also present the corresponding integrated gluon structure function. The results are compared with those obtained in other analyses. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Nicusor Timneanu Title: Saturation model for two-photon interactions at high energies Abstract: We analyse the interaction of two photons at high energies and formulate a new model for the total gamma*-gamma* cross-section for arbitrary photon virtualities. This cross-section is assumed to satisfy the saturation property with the saturation radius taken from the Golec-Biernat and Wüsthoff analysis of the gamma*-p interaction at HERA. The model is supplemented by the QPM and non-pomeron reggeon contributions. The model gives a very good description of the data on the gamma-gamma total cross-section, on the photon structure function F2gamma(x,Q2) at low x and on the gamma*-gamma* cross-section extracted from LEP double tagged events. The production of heavy flavours in gamma-gamma collisions is also discussed. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Robert Bernstein "Preliminary Structure Function Analysis from NuTeV." NuTeV, because of its sign-selected quadrupole triplet beam, can probe structure functions at high-y with significantly smaller systematic errors than previous high-energy neutrino measurements. We will present preliminary results and discuss the systematic errors of the NuTeV structure function analysis as a whole. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Sven Moch Title: Towards deep-inelastic structure functions at NNLO (Sven-Olaf Moch, Karlsruhe University) Abstract: The precision of deep-inelastic scattering experiments at HERA is surpassing the accuracy of the current theoretical predictions for the structure functions $F_2$, $F_3$ and $F_L$ at next-to-leading order in QCD. In order to obtain the best possible PDF's for LHC predictions, it is necessary to calculate $F_2$, $F_3$ and $F_L$ in perturbative QCD up to the three loop corrections. We report on ongoing work to accomplish this task and discuss the prospects of next-to-next-to-leading order analyses for structure functions in deep-inelastic scattering. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Robert Thorne Title: Update on MRST parton distributions. I present an update on the parton distributuions obtained by the MRST collaboration. Issues addressed will include approximate NNLO partons and the uncertainties on partons and related quantities from a variety of sources. Comparisons with alternative approaches will be made. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%