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Shiv Nadar University

(SoNS) School of Natural Sciences

The recent experimental measurement of the gamma to 3 pi coupling constant is compared with the prediction of an extended PCAC hypothesis. Consistency is then sought between the omega rho pi coupling constant, as obtained from an analogue of the GT relation for vector mesons, and what is predicted by the low-energy theorems. A remarkable relation for the dimensionless coupling constant g(rho pi pi) emerges, mod g(rho pi pi) mod =2 pi. The authors also find that the coupling constant g(omega rho 0 pi 0), as obtained from the GT relation for vector mesons, does not support an omega pi pi pi contact term. © 1987 IOP Publishing Ltd.

World University root node

Physics

Journal of Physics G: Nuclear Physics

The γ3Π coupling constant, the goldberger-treiman relation, vector mesons and the Ω3Π contact term

In this paper gluon admixtures in neutral pseudoscalar mesons are considered to test the quark-line rule for the reactions πp→η∆, ηn, p(Formula Presented)→ππη, etc. It is found that the experimental data on these reactions support the possibility of a small gluonium admixture in the η and η' states. Our results have also been used to predict some electromagnetic decay rates of the pseudoscalar glueball states l(1440) along with those of η and η'. © 1986 The Institute of Physics.

Gluon admixtures in the 0¯ neutral mesons: A survey of the quark-line rule

Recently, Chanowitz has derived two constraints which become powerful if the experimental limits on Γ(ι → γγ)/ B(ι → κκπ)2 and Γ(ι → φ{symbol}γ) · B(ι → κκπ) are improved. It is pointed out that given the present limit on Γ(ω → ιγ), such a possibility appears unlikely. © 1986.

Fulltext

Physics Letters B

Radiative decays and SU(3) flavour structure of iota (1460)

Some coupled nonlinear equations are considered for studying traveling-wave solutions. By introducing a stream function ψ it is shown that if one of the solutions is of the form v≡v(x - ct), the other also must be of the form u≡u (x - ct). In addition, the possibility of including cubic nonlinear terms has been considered and such a system, assuming that the solutions are of the traveling-wave type, has been solved. © 1986 American Institute of Physics.

Journal of Mathematical Physics

Traveling-wave solutions and the coupled Korteweg-de Vries equation

Ab initio configuration interaction calculations have been carried out for the lower electronic states of the glycine zwitterion in both the gas phase and in dilute aqueous solution. The solution calculations employ a fractional charge model for the water molecules. The calculated gas phase and solution spectra differ sharply. While excited electronic states of marked Rydberg character are more strongly affected than are valence states, all transitions are shifted to higher energy in solution. We find good agreement with experimentally observed optical absorption spectrum of the glycine zwitterion in thin films. © 1986, American Chemical Society. All rights reserved.

Chemistry

Journal of the American Chemical Society

Effect of Aqueous Solvation upon the Electronic Excitation Spectrum of the Glycine Zwitterion: A Theoretical CI Study Using a Fractional Charge Model

The mixing effect on S*(975), epsilon (1300) and G(1590) is investigated by identifying the G(1590) as a possible candidate for the scalar gluonium state. This enables one to explain the largeness of the G to eta eta rate relative to G to pi pi and G to KK.

Meson-gluonium mixing and the scalar nonet

The SU(3)F breaking effects are considered to fit the set of anomalous Ward identities in QCD. The solutions are then analysed and compared with a recent work that also deals with such identities. © 1985 Springer-Verlag.

Zeitschrift für Physik C Particles and Fields

Solutions of anomalous Ward identities in a QCD framework. II

We examine a nontopological model for stable scalar solitons in 3+1 dimensions. Making the complex scalar field satisfy a local virial constraint we look into the possibility of obtaining nonsingular stationary solutions. © 1985 The American Physical Society.

Physical Review D

Remarks on scalar solitons and the virial constraint

The author considers the possibility of the existence of charmonium-four-quark states to explain the recently observed anomalies in psi decays. The photoproduction cross section appears to give a reasonable signal for the production of the charmonium-pion state.

Can four-quark states explain the anomalous ψ decays?

The effect of UA(1) symmetry restoration on the pseudoscalar mass spectrum is studied. The possibility of U(3) becoming an exact symmetry at high temperatures is considered.