6,412 research outputs found
Kaon-Baryon Couplings and the Goldberger-Treiman Relation in SU(3) x SU(3)
The coupling constants G_(K N Lambda) and G_(K N Sigma) are obtained from the
Goldberger-Treiman relation in the strange channel with chiral symmetry
breaking taken into account. The results, G_(K N Lambda)=-12.3+-1.2 and G_(K N
Sigma)=5.5+-.5 come close to the SU(3) values.Comment: 6 Page
QCD sum rule approach for the light scalar mesons as four-quark states
We study the two point-function for the scalar mesons and as diquak-antidiquark states. We also study the decays
of these mesons into , and . We found that the
couplings are consistent with existing experimental data, pointing in favor of
the four-quark structure for the light scalar mesons.Comment: 6 pages, 4 figure
Generalized Semimagic Squares for Digital Halftoning
Completing Aronov et al.'s study on zero-discrepancy matrices for digital
halftoning, we determine all (m, n, k, l) for which it is possible to put mn
consecutive integers on an m-by-n board (with wrap-around) so that each k-by-l
region holds the same sum. For one of the cases where this is impossible, we
give a heuristic method to find a matrix with small discrepancy.Comment: 6 pages, 6 figure
Multiquark picture for Lambda(1405) and Sigma(1620)
We propose a new QCD sum rule analysis for the Lambda(1405) and the
Sigma(1620). Using the I=0 and I=1 multiquark sum rules we predict their
masses.Comment: 5 pages, 3 ps files. Talk given at 11th International Light-Cone
School and Workshop : New Directions in Quantum Chromodynamics, and 12th
Nuclear Physics Summer School and Symposium (NuSS'99), Seoul, Korea, 26 May -
26 Jun, 199
An analytical model of prominence dynamics
Solar prominences are magnetic structures incarcerating cool and dense gas in
an otherwise hot solar corona. Prominences can be categorized as quiescent and
active. Their origin and the presence of cool gas (~K) within the hot
(~K) solar corona remains poorly understood. The structure and dynamics
of solar prominences was investigated in a large number of observational and
theoretical (both analytical and numerical) studies. In this paper, an analytic
model of quiescent solar prominence is developed and used to demonstrate that
the prominence velocity increases exponentially, which means that some gas
falls downward towards the solar surface, and that Alfven waves are naturally
present in the solar prominences. These theoretical predictions are consistent
with the current observational data of solar quiescent prominences.Comment: Update Final Journal Print Version along with other Metadat
Solutions of in
Though it is well known that the roots of any affine polynomial over a finite
field can be computed by a system of linear equations by using a normal base of
the field, such solving approach appears to be difficult to apply when the
field is fairly large. Thus, it may be of great interest to find an explicit
representation of the solutions independently of the field base. This was
previously done only for quadratic equations over a binary finite field. This
paper gives an explicit representation of solutions for a much wider class of
affine polynomials over a binary prime field
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