9,618 research outputs found
Coupling Constants for Scalar Glueball Decay
We evaluate the partial decay widths of the lightest scalar glueball to pairs
of pseudoscalar quark-antiquark states. The calculation is done in the valence
(quenched) approximation on a 16^3 \time 24 lattice at . These
predictions and values obtained earlier for the infinite volume continuum limit
of the scalar glueball's mass are in good agreement with the observed
properties of and inconsistent with all other observed meson
resonances.Comment: 8 pages of Latex, 12 PostScript figures, 2 macros included, plenary
talk given by D. Weingarten at Lattice 95, to appear in conference
proceeding
Report for neutral buoyancy simulations of transfer orbit stage contingency extravehicular activities
The transfer orbit stage (TOS) will propel the advanced communications technology satellite (ACTS) from the Space Shuttle to an Earth geosynchronous transfer orbit. Two neutral buoyancy test series were conducted at MSFC to validate the extravehicular activities (EVA) contingency operations for the ACTS/TOS/mission. The results of the neutral buoyancy tests are delineated and a brief history of the TOS EVA program is given
Numerical Evidence for the Observation of a Scalar Glueball
We compute from lattice QCD in the valence (quenched) approximation the
partial decay widths of the lightest scalar glueball to pairs of pseudoscalar
quark-antiquark states. These predictions and values obtained earlier for the
scalar glueball's mass are in good agreement with the observed properties of
and inconsistent with all other observed meson resonances.Comment: 12 pages of Latex, 3 PostsScript figures as separate uufil
SWECS tower dynamics analysis methods and results
Several different tower dynamics analysis methods and computer codes were used to determine the natural frequencies and mode shapes of both guyed and freestanding wind turbine towers. These analysis methods are described and the results for two types of towers, a guyed tower and a freestanding tower, are shown. The advantages and disadvantages in the use of and the accuracy of each method are also described
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