678,788 research outputs found
Global Fits of the CKM Matrix
We report upon the present status of global fits to Cabibbo-Kobayashi-Maskawa
matrix.Comment: 3 pages, 3 figures invited talk presented at EPS conference, Aachen
July 17-2
The Status of the Pion-Nucleon Coupling Constant
A review is given of the various determinations of the different piNN
coupling constants in analyses of the low-energy pp, np, pbarp, and pi-p
scattering data. The most accurate determinations are in the energy-dependent
partial-wave analyses of the NN data. The recommended value is f^2 = 0.075 . A
recent determination of f^2 by the Uppsala group from backward np cross
sections is shown to be model dependent and inaccurate, and therefore
completely uninteresting. We also argue that an accurate determination of f^2
using pp forward dispersion relations is not a realistic option.Comment: 19 pages, latex2e with a4wide.sty, more information is available at
http://NN-OnLine.sci.kun.nl . Invited talk at FBXV, Groningen, The
Netherlands, July 22-26, 1997. Invited talk at MENU97, Vancouver, B.C.,
Canada, July 28 - August 1, 199
Dark Matter and Cosmic Strings in Particle Models
In this talk, I will discuss the mechanism of nonthermal production of the
neutralino cold dark matter from the decay of cosmic strings and the embedded
defects, the and strings in the strong interaction sector
of the standard model.Comment: 9 pages, no figure, Invited Plenary Talk Given at COSMO'99, ICTP,
Trieste, Sept.27-Oct.2, 199
Reaction Mechanisms with Exotic Nuclei
This talk examines a number of reaction mechanisms for scattering initiated
by an exotic projectile. Comparisons are made with recent experimental data, in
order to extract information on the peculiarity of the nuclear structure under
extreme conditions and to test the accuracy of the available theoretical
methods. Predictions for future experiments are also made.Comment: 13 Latex pages, 2 table, 2 ps figures. Invited talk given at the
Symposium on Nuclear Clusters, Rauischholzhausen, Germany, 5-9 August 200
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