T. Barnes

Physics at BES-III

We give a detailed review of the construction of gauge invariant Lagrangians for free and interacting higher spin fields using the BRST approach developed over the past few years.This physics book provides detailed discussions on important topics in

On the mechanism of open-flavor strong decays

\tau

Charmonium options for the X(3872)

-charm physics that will be explored during the next few years at \bes3 . Both theoretical and experimental issues are covered, including extensive reviews of recent theoretical developments and experimental techniques. Among the subjects covered are: innovations in Partial Wave Analysis (PWA), theoretical and experimental techniques for Dalitz-plot analyses, analysis tools to extract absolute branching fractions and measurements of decay constants, form factors, and CP-violation and \DzDzb-oscillation parameters. Programs of QCD studies and near-threshold tau-lepton physics measurements are also discussed.

Susceptibility and excitation spectrum of (VO)2P2O7 in ladder and dimer-chain models.

Open-flavor strong decays are mediated by {ital q{bar q}} pair production, which is known to occur dominantly with {sup 3}{ital P}{sub 0} quantum numbers. The relation of the phenomenological {sup 3}{ital P}{sub 0} model of these decays to {open_quote}{open_quote}microscopic{close_quote}{close_quote} QCD decay mechanisms has never been established clearly. In this paper we investigate {ital q{bar q}} meson decay amplitudes assuming pair production from the scalar confining interaction ({ital sKs}) and from one gluon exchange (OGE). {ital sKs} pair production predicts decay amplitudes of approximately the correct magnitude and {ital D}/{ital S} amplitude ratios in {ital b}{sub 1}{r_arrow}{omega}{pi} and {ital a}{sub 1}{r_arrow}{rho}{pi} which are close to experiment. The OGE decay amplitude is found to be subdominant in most cases, a notable exception being {sup 3}{ital P}{sub 0}{r_arrow}{sup 1}{ital S}{sub 0}+{sup 1}{ital S}{sub 0}. The full {ital sKs} + OGE amplitudes differ significantly from {sup 3}{ital P}{sub 0} model predictions in some channels and can be distinguished experimentally, for example, through an accurate comparison of the {ital D}/{ital S} amplitude ratios in {ital b}{sub 1}{r_arrow}{omega}{pi} and {ital a}{sub 1}{r_arrow}{rho}{pi}. {copyright} {ital 1996 The American Physical Society.}

MAGNETIC EXCITATIONS IN THE S = 1/2 ALTERNATING CHAIN COMPOUND (VO)2P2O7

In this paper we consider all possible

Inelastic neutron scattering from the spin ladder compound (VO)2P2O7.

1D

Magnetic Excitations in the S=1/2 Alternating Chain Compound (VO) {sub 2}P{sub 2}O{sub 7}

and

Strong Decays of Strange Quarkonia

2P

A prediction of spin-0 and -2 vector-meson molecules. A new model of the θ (1720)

c\overline{c}