[en] The evolution of outgoing quarks and gluons into outgoing hadrons (the analog of parton decay functions) is studied in QCD perturbation theory. The results are characterized by logarithmic scaling violations and large transverse momenta. The various functions describing the production of hadrons containing a single heavy quark are calculated from first principles. (Auth.)

[en] Different asymmetries in polarized lepton scattering are shown to be remarkably dependent on the valence quark and lepton multiplet structure in currently discussed gauge theories. Therefore deep inelastic muon experiments at SPS energies can contribute significantly to the investigation of neutral currents. (Auth.)

[en] Axions are here defined as possible new elementary particles of mass less than or comparable to electrons. It is stated that if they really exist their discovery would be a major scientific advance. The facts and the motivation underlying the recent search for these conjectured new particles are outlined in this review. 27 references. (Author)

[en] A strong negative transverse polarization Psub(z) is found for forward produced lambdas observed in 10 and 16 GeV/c K^-p interactions. This indicates that exchange of natural spin-parity are dominant in the production process. Using the polarization results, the dsigma/du' distribution for natural and unnatural spin-parity exchanges are derived. For unnatural exchanges, a dip is observed at u' approximately equal to 0.3 GeV², which can be explained as a nonsense-wrong-signature zero of the Nsub(β) trajectory. The value of Psub(z) for forward produced lambdas is constant with energy. This is in agreement with the triple-Regge model prediction, as is the fact that Psub(z) is constant as a function of M²/s. The two non-transverse polarization components, Psub(x) and Psub(y), have been measured and are found to be consistent with zero for all x values, unlike Psub(z). (Auth.)

[en] Energy spectra at 90⁰ are plotted for fragments produced in the 2.1 GeV interaction of protons with carbon and for the 4.9 GeV p + U and p + Al reactions

[en] Analytical expressions for the asymptotic neutron flux sensitivity function in an infinite homogeneous medium (plate geometry, isotopic scattering) to the neutron cross-section uncertainties were derived for the one-dimensional problem of neutron propagation in a shield. The results were compared with calculations performed by the discrete ordinate code ROZ-5. Investigation of the sensitivity function for Fe-H₂O two-layer shields was made for the multigroup problem. Accuracy of neutron flux calculation results behind the shield was estimated. (author)

No abstract available

[en] Upper and lower bounds on the ground-state energy per nucleon Esub(g)/N and the free energy per nucleon F(β)/N are constructed for nuclear systems described by pseudospin Hamiltonians. In the limit of large numbers of nucleons these bounds become equal. A simple algorithm is developed for computing Esub(g)/N, F(β)/N and S/N (entropy per nucleon) exactly in the N → infinity limit. The values of Esub(g)N and F(β)/N are obtained by computing the minimum value of associated potential functions hsub(C) and phi. These potentials are constructed very simply from the pseudospin Hamiltonian. Ground-state energy phase transitions are determined by investigating how the minima of the potential hsub(C) charge as a function of changing nuclear interaction parameters. Thermodynamic phase transitions are determined by investigating how the minima of the potential phi change as a function of changing nuclear temperature. Concise conditions are given for the occurrence of a second-order phase transition of either type. These conditions define critical values of the nuclear interaction parameters at which a ground-state energy second-order phase transition occurs and the critical temperature at which a thermodynamic second-order phase transition occurs. A 'crossover theorem' relates the occurrence of a ground-state energy phase transition to a thermodynamic phase transition. (Auth.)

[en] Two forms of a velocity-dependent effective potential are used. The binding energy and the incompressibility of the nuclear matter are calculated. These are found to be in a good agreement with those obtained by others and with the experimental results. The single-particle potential, the effective mass M* and the nuclear surface energy are also discussed and compared with those obtained by the others. (orig.)

[en] The low energy scattering of nucleons by ²H, ³He and ⁴He are analyzed for parity nonconserving effects. The asymmetry in the total cross section of longitudinally polarized projectiles is formulated in terms of the optical theorem and a distorted wave Born approximation. For two nucleons at low energies it is only necessary to consider l = 0 to l = 1 matrix elements of the weak nucleon-nucleon potential. The asymmetries in the scattering from nuclear targets are related to the parameters of an effective weak nucleon-nucleon potential, so that they may be used to help differentiate between various proposed theoretical potentials. (Auth.)