The most important part of the order α s corrections to the charm component of the charged-current structure functions F2(x,Q ) and F3(x,Q ) have been calculated. This calculation is based on the asymptotic form of the heavy-quark coefficient functions corresponding to the higher order corrections to the W-boson-gluon fusion process. These coefficient functions which are in principle only valid...

The solution to the BFKL equation grows like a power of center of mass energy, s, violating unitarity conditions at high energies. The growth of the cross section can be tamed by taking into account multiple pomeron exchanges. This is known as saturation and it is expressed in the Balitsky-Kovchegov equation, [6]. Conservation of energy should also slow down the growth of the cross section, and...

Inclusive production of D(2010) mesons in deep inelastic scattering has been measured using ep and ep data obtained with the ZEUS detector at HERA using integrated luminosities of 16.7 and 65.2pb, respectively. The decay channel D → Dπ with D → Kπ and corresponding antiparticle decays were used to identify D mesons. The D cross sections in ep and ep interactions agree with NLO QCD predictions, ...

The existing data obtained in deep-inelastic scattering (DIS) experiments in the kinematical region xB ≤ 10 −2 and Q ≥ 5 GeV are examined to gain insight into the dynamics of interacting gluons. It is shown that the striking experimental facts observed in this kinematical region can be readily understood in terms of concepts and methods of Complex Systems in the framework of Non-Perturbative QC...

We review the existing data on asymmetries in deep inelastic muon scattering involving changes in the lepton and quark helicities. The status of the present E.M.C. experiment on spin structure functions is discussed together with future developments. The process of Deep Inelastic Scattering using electron, muon and neutrino probes has been very successful in developing our present understanding...

Different theoretical methods used for the description of diffractive processes in small-x deep inelastic scattering are reviewed. The semiclassical approach, where a partonic fluctuation of the incoming virtual photon scatters off a superposition of target colour fields, is used to explain the basic physical effects. In this approach, diffraction occurs if the emerging partonic state is in a c...

We reanalyze deep inelastic scattering data of BCDMS Collaboration by including proper cuts of ranges with large systematic errors. We perform also the fits of high statistic deep inelastic scattering data of BCDMS, SLAC, NM and BFP Collaborations taking the data separately and in combined way and find good agreement between these analyses. We extract the values of the QCD coupling constant αs(...

We outline the existing descriptions of the charm component of the deep inelastic proton structure function F2. We discuss recent approaches to include charm mass effects in the parton evolution equations and the coefficient functions. Contribution to the Proceedings of the Madrid low x Workshop, June 18-21 1997, Miraflores, Spain Both H1 and ZEUS have used c → D to measure charm production in ...

It has been found that recent results on forward jet production from deep inelastic scattering can neither be reproduced by models which are based on leading order αs QCD matrix elements and parton showers nor by next-toleading order calculations. The measurement of forward jet cross sections has been suggested as a promising probe of new small x parton dynamics and the question is whether thes...

In deep inelastic neutral current scattering of positrons and protons at the center of mass energy of 300 GeV, we observe, with the ZEUS detector, events with a high energy neutron produced at very small scattering angles with respect to the proton direction. The events constitute a fixed fraction of the deep inelastic, neutral current event sample independent of Bjorken x and Q2 in the range 3...