[en] Short communication

[en] Experimental research in high energy neutrino interactions is summarized. A list of publications and some abstracts of recent talks are included

[en] The neutrino data from Fermilab have been searched for events with unusual topologies involving muons. Neutrino events with two muons in the final state have been observed in two independent experiments. From all indications this represents a very exciting development and very likely represents new particle production. These events do not appear to be easily explainable from known sources such as π or K-decay. Also, a threshold seems indicated by the lack of observation of such 2μ events at Serpukhov

No abstract available

[en] The authors present a high-statistics precision measurement of the weak mixing angle done at Fermilab experiment E770 using the ratio of neutral-current to charged-current neutino-nucleon deep inelastic scattering at the CCFR neutrino detector in the Fermilab quad-triplet neutrino beam

No abstract available

[en] Preliminary results on the elastic reaction of neutrino and antineutrino are compared with the predictions of classical V-A theory with CVC assumption

[en] We study the effect of the external magnetic field on the scattering of an electron off a free hadron in the ultrarelativistic limit of electrons. In this work, the electrons are specifically assumed to be initially in their lowest Landau level. Our calculations show that the cross sections seriously depend on the external magnetic field for the fixed initial electron energy. As the magnetic field strength increases, above some critical value B_c, the cross section of electron-neutron scattering increases continuously, while that of electron-proton scattering becomes constant. Both of them decrease drastically as the magnetic field strength decreases below B_c. copyright 1997 The American Physical Society

[en] In this paper we consider the process of diffraction dissociation in deeply inelastic scattering in the region of small produced mass, which we define as production of q-bar q-pair and q-bar q G system in the final state. We show that the small distance contributions (r perpendicular is proportional to 1/Q) to the longitudinal polarised virtual photon dominate. Formulae for the cross section using the gluon structure function are written within the framework of perturbative QCD. It is shown that the production of small masses by the transverse polarized photo is concentrated at moderate values of r perpendicular to ∼ 1 GeV^-1, where the p QCD approach can be applied. This could be responsible for a considerable part of the diffractive production. It is shown that only q-bar q pair production contribute to the diffraction dissociation at β > 0.4, the possibility to extract the value of the gluon structure function from the measurements in this kinematic region is discussed. The evolution of the DD structure function is studied, and a solution to the DD evolution equations is proposed. Shadowing corrections are discussed for both the transverse and longitudinal polarised photon, and estimates of the different damping factors are given. The relation between diffractive production and the corrections to F2, is alluded to. (author). 45 refs., 16 figs

[en] We review the status and prospects of theoretical studies of neutrino–nucleus interactions, and discuss the influence of the treatment of nuclear effects on the determination of oscillation parameters. The models developed to describe the variety of reaction mechanisms contributing to the nuclear cross sections are analyzed, with emphasis placed on their capability to explain the large body of available electron scattering data. The impact of the uncertainties associated with the description of nuclear structure and dynamics on the determination of oscillation parameters is illustrated through examples, and possible avenues towards a better understanding of the signals detected by accelerator-based experiments are outlined.