Results 1 - 10 of 33
Results 1 - 10 of 33. Search took: 0.016 seconds
|Sort by: date | relevance|
[en] Neutrino beam lines, large neutrino detectors and a liquid butane time-projection chamber for neutrino-nuclei experiments were discussed during this workshop. Topics concerning beam lines which were addressed include: proton beam pulse structure and energy, target design, and beam monitoring. Requirements for detectors for neutrino-proton elastic scattering, neutrino-electron elastic scattering and neutrino oscillation experiments were reviewed and two detector designs meeting these requirements were proposed. Requirements for the liquid butane detector were also discussed
[en] The calculation of QCD (quantum chromodynamics) corrections to local operators involving quark and gluon fields generates evanescent operators which vanish when the dimension of the Feynman integrals equals 4. These operators when renormalized with minimal subtraction do not vanish for n=4; there is a non-minimal subtraction scheme, in which these operations remain vanishing for n=4, and the physical operators are left unchanged to all orders in g, the QCD coupling constant
[en] AISI 1018 steel substrates were powder-pack, diffusion boronized at 850 C for 4 h, followed by air quenching. Optical microscopy in conjunction with color etching was used to obtain the average penetration depth of the iron monoboride layer (9 μm) and the iron diboride layer (57 μm). X-ray diffraction by synchrotron radiation, conducted at the National Synchrotron Light Source in Brookhaven National Laboratory, confirmed the presence of iron monoboride and iron diboride in the boronized plain steel substrates. The sin2 ψ technique was employed to calculate the residual stress found in the iron monoboride layer (-237 MPa) and in the substrate layer (-150 MPa) that is intertwined with the needle-like, iron diboride penetration.
[en] It is well known that the two-loop QCD (quantum chromodynamics) β-function is the same in each of the renormalization schemes dimensional regularization (NDR), dimensional reduction (RD) and the 't Hooft Veldman scheme. This is also true when electromagnetic corrections are included in the β-function
[en] The authors obtain the effective Hamiltonian for weak nonleptonic decays under a) QCD leading logarithmic corrections to all orders, b) QCD two-loop non leading corrections, c) one-loop QED corrections, as in Buras A. J., Jamin M., Lautenbacher M. and Weisz P., Nucl. Phys. B, 400 (1993) 75