منابع مشابه
The Structure of Stable Pentaborane.
Stable pentaborane, B&H9, is one of the boron hydrides, a short, comparatively little studied series of extraordinary compounds for which a satisfactory elementary valence theory is lacking. In 1947 we decided to undertake new electron diffraction studies of the molecular structures. The early diffraction work and most of the theoretical discussion had been too much influenced (it now seems) by...
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We discuss the properties of the pentaquark in a collective stringlike model with a nonplanar configuration of the four quarks and the antiquark. In an application to the mass spectrum of exotic Θ baryons, we find that the ground state pentaquark has angular momentum and parity J = 1/2− and a small magnetic moment of 0.382 μN . The decay width is suppressed by the spatial overlap with the decay...
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An elementary formalism is described to generate series of massless radial excitations within a relativistic BS (confinement) model, thus excluding orbital excitations. Coupling the photon to the constituent scalar, a finite self-mass integral results in the lowest order of a. It represents an infinite system of self-consistent equations for an infinite number of leptonic masses. The system can...
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We review the calculation of the spectrum of glueball masses in non-supersymmetric Yang-Mills theory using the conjectured duality between supergravity and large N gauge theories. The glueball masses are obtained by solving the supergravity wave equations in a black hole geometry. The glueball masses found this way are in unexpected agreement with the available lattice data. We also show how to...
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The mass spectrum of sulfur (S,) obtained with the ion trap mass spectrometer is compared with that obtained using an E-B spectrometer. Each ion in the spectrum is examined for fragmentation and the vapor shown to consist mostly of the SB oligomer. The chemical ionization spectra using methane, isobutane, ammonia, and water are also examined and an estimate made of the proton affinity of Ss. Us...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1949
ISSN: 0091-0635
DOI: 10.6028/jres.043.011