[en] Results are presented on charged current, neutral current, and multimuon events induced by neutrino and antineutrino narrow-band beams. The overall strength and the differential y-distribution of neutral and charged current interactions are investigated to determine the fraction of right- and left-handed constituents inside the nucleon as a function of the neutrino energy in the interval 0 less than E/sub nu/ less than 200 GeV. Direct tests on new particle production are performed based on the observation of about 300 events with more than one muon in the final state. Angles, cross sections, and scatter plots, neutral and charged current ratios are among the parameters determined. 14 references

[en] We report on the first physics studies with the H1 detector at the e-p collider HERA based on data with an integrated luminosity of ∫ Ldt=1.5 nb^-1 which were recorded in July 1992. The total γp cross section was measured at an average center of mass energy of E_CM^γp=200 GeV as σ_γp^tot=(150±26) μb (preliminary). The analysis of the hadronic final states in the quasireal interactions of photons with protons shows clear evidence for hard scattering processes both in single particle spectra and jet formation and good indications for the dominance of resolved photon contributions as predicted by QCD. HERA allows the investigation of deep inelastic scattering down to values of x=10^-4 for Q²>5 GeV/c²; two orders of magnitude lower in x than present fixed target experiments. The distributions of the first 200 events which were observed and identified in H1 are in good agreement with expectations. First limits on leptoquarks are presented. (orig.)

[en] New experimental results on inclusive structure function measurements as well as on hadronic final states are presented and discussed. Special emphasis is given to the new results from HERA which are relevant for the discussion of QCD dynamics at small parton momentum fractions x. (orig.)

[en] This talk concentrates on the measurement of shape and Q²-dependence of the nucleon structure functions, the comparison with other experimental results and finally the quantitative comparison with the predictions of quantum chromodynamics (QCD)

[en] New structure function measurements from fixed target experiments and especially HERA are reviewed. The extraction of parton distributions from these measurements is discussed with special emphasis on systematic problems. New information from Drell-Yan and direct photon production experiments are also presented. Finally the present uncertainties of our knowledge of parton distributions are discussed

[en] This report contains an article on the first results on ep and γp collisions obtained at HERA and a description of the H1 detector. (HSI)

[en] The most interesting experimental facts presented in this seminar involve 1) neutrino masses and oscillations, 2) direct CP violation and 3) search for new physics. The best evidence for muon neutrino oscillations so far comes from the Super Kamiokande experiment which studied the interaction rate of atmospheric neutrino in a huge water Cerenkov detector as a function of the zenith angle. The observation of oscillations of ν_μ has strongly lowered our acceptance level to also believe in electron neutrino oscillations. As for solar neutrino the ν_e flux from the sun has been measured by 3 types of experiments. They all have in common that the observed flux of neutrinos is only 50 % of the expected value in the solar standard model (SSM). The assumption of neutrino oscillations is able to bring all 3 measurements into agreement with SSM. Direct CP violation has been established by the combined effort of the CERN (NA31 and NA48) and Fermilab (KTeV) experiments. CP violation in K-decays is now seen as a property of weak interaction. Finite neutrino masses cannot be incorporated in the standard model. The measurement of masses and of mixing angles will give only weak hints for the theory beyond the standard model. We have indirect evidence for the Higgs from electroweak precision experiments. The next chance to see the Higgs is therefore at Fermilab if the Higgs is supersymmetric and if tan(β) is large. The discovery of compactification of extra-dimensions at the TeV scale is feasible as discussed in the meeting. (A.C.)

[en] Present day lepton-nucleon scattering experiments will find a continuation at the HERA e-p collider in the near future. HERA experiments will be complementary and in concurrence to other colliders (e/sup +/e/sup -/, p-barp) which will work in a similar energy range at a similar time. HERA has a rewarding unique program of ''standard'' physics. If new physics should show up in the new energy domain, HERA will be an excellent machine to help reveiling its structure. Depending on luck and time scale, HERA offers also the chance of original discoveries in fields where it is unique

No abstract available

[en] In this talk I summarize ideas and plans which have been put forward by members of all collaborations running muon or neutrino experiments at CERN. During our discussions there was general agreement that: i) substantial improvements of structure function measurements in the SPS range are still possible and necessary and ii) it is the responsibility of the present groups and of CERN to provide a ''final'' set of structure functions in the present energy range. (orig.)