[en] This document describes the status, as of the Granlibakken workshop, of the study of the search for Z⁰ → Higgs neutrinos antineutrinos

[en] A case is made for the importance of fragmentation, and its relevance to star formation, in collapsing interstellar clouds. The results of a large number of numerical calculations are presented. They follow the collapse of an initially uniform, rigidly rotating cloud into a disk and through to its break up into separate fragments. The onset of instability towards fragmentation is dealt with in detail. An explanation of the results, in terms of previous calculations on the stability of self gravitating disks and rings is given. The properties of the final fragments are studied. It is found that only a small fraction of the cloud's mass successfully falls into high density fragments, before further collapse and fragmentation occurs. Vorticity transport is dealt with. It is demonstrated that circulation invariants, valid for isentropic fluids, are well conserved for most of a cloud's evolution. (author)

[en] The properties of the explosive (i.e., cold cathode) emission plasmas formed on the cathodes of intense beam diodes and magnetically insulated transmission lines significantly affect the behavior of these devices. A review of the current understanding of explosive emission processes is given here. This paper emphasizes work reported outside the general pulsed power literature but nonetheless relevant to diodes and MITL's, such as the extensive studies of vacuum arcs and the Soviet studies of single emitters and individual cathode spots. Particular attention is given to the significance of dielectric contaminations on the cathode and to the presence of fast ions emitted from cathode spots. The dielectric inclusions and surface layers which exist on cathodes in typical vacuum systems can have several effects. Microscopic studies of vacuum breakdown have shown that breakdown often occurs at the location of dielectric inclusions; explanations for this range from simple field enhancement at the dielectric-metal triple points to semiconductor physics effects such as band bending or electroformed filaments

[en] A study of electron-positron annihilation to two-photon final state is done on 18.7 inverse picobarns of data at 29 GeV center-of-mass energy from PEP using the High Resolution Spectrometer. A total of 1600 events are observed with the barrel calorimeter which covers 60% of the solid angle. A lower limit on the mass of an excited electron is set by comparing the cross section of Bhabha scattering to the cross section of two photons in the final state

[en] In recent years many major oil companies have elected to rationalize their producing assets. Mature production--particularly onshore in developed countries, associated with high costs and small profit margins--has been the major target. The current weakness in oil prices has resulted in many such properties being on the market. However, much production marginal to a major can be highly profitable to a cost-effective independent, particularly if the production fits strategically with the independent's asset portfolio. Although many independents recognize that some of the producing assets on the market could be of potential value to them, in a period of volatile prices two important valuations have to be technically justified and negotiated to enable or persuade them to conclude a purchase agreement for a specific asset. These are: A purchase value for an asset that is acceptable to both seller and buyer; and A loan value for the asset to establish the level of debt that the asset can support for the buyer. In defining these two important values (both of which are usually established as ranges rather than single values) the independent has to protect itself against a downturn in commodity prices and exposing itself to an unserviceable level of debt. The paper discusses reducing risks, purchase price hedge, an example of a hedged purchase price, price elements, loan value analysis, agreement structure, loan value hedge, and an example of a hedged loan value

[en] Recent electroweak results from hadron colliders are summarized. Almost all new results come from the CDF and Dφ detectors at the Fermilab Tevatron Collider. The status of measurements of the W mass and width, searches for new electroweak bosons (W' and Z'), and limits on anomalous couplings of the W and Z are presented. (author)

No abstract available

[en] Electroweak results are presented from the CDF and DO experiments based on data collected in recent runs of the Fermilab Tevatron Collider. The measurements include the mass and width of the W boson, the production cross sections of the W and Z bosons, and the W charge asymmetry. Additional results come from studies of events with pairs of electroweak gauge bosons and include limits on anomalous couplings

[en] Two cosmic rays which pass through the same point going in opposite directions will, in the absence of scattering and inhomogeneities in the magnetic field, trace helices about adjacent flux tubes, whose centerlines are separated by one gyrodiameter. A directional anisotropy at the point suggests a difference in the number of cosmic rays loading the two flux tubes; that is, a density gradient over the baseline of a gyrodiameter. Previous studies at lower energies have shown that the cosmic ray density gradients vary in time and space. It is suggested that the radial gradient associated with solar cycle modulation is supported largely by narrow barriers which encircle the sun and propagate outward with the solar wind. If so, the anisotropy is a desirable way to detect spatial gradients, because it can be associated with the local solar wind and magnetic field conditions. Anisotropic measurements made by Cerenkov detectors on Pioneers 10 and 11 were studied. It was found that local anisotropy varies greatly, but that the long term average is consistent with the global radial gradient measured between two spacecraft over a baseline of many AU

[en] Pioneers 10 and 11, now 35 and 18 AU from the Sun, continue to extend our knowledge of the spatial dependence of cosmic ray intensities in the heliosphere. Radial gradients measured from these spacecraft by UCSD detectors, which have integral energy responses above thresholds of 80 and 500 MeV/nucleon, are reported. An average gradient of 2%/AU typifies the data set as a whole, but there are time and energy dependences that deviate from this value. With operating lifetimes of 13 and 12 years, respectively, for the two spacecraft, the time dependence was followed for over a solar cycle. The higher energy channel shows less modulation on all time scales. At the start of the present cycle, the gradient is lower than the average value during the last solar cycle