Sydney Meshkov

A BCS QUARK MASS MATRIX

The quark mass gap and quark mass hierarchy is obtained by introducing a BCS interaction among ur-quarks. A 3×3 quark mass matrix with equal matrix elements, i.e., with all ur-flavors interacting with the same strength, has eigenvalues 0, 0 and 3; both the quark charge −1/3 and charge +2/3 systems with one heavy quark and two almost massless quarks resemble these eigenvalues. The physical mass splittings between the two lightest quarks come from higher-order corrections to the mass matrix which are obtained by fitting the Kobayashi-Maskawa matrix VKM.

Glueballs: Their Spectra, Production and Decay

What is a glueball? It is a colorless and flavorless composite of two or more gluons whose existence is implied in quantum chromodynamics (QCD) [1–3]. That we are even considering such an object today is a true tribute to serendipity. Let us see why I say that.

Glueballs: Their experimental signature

Abstract We study hadrons with a 2-gluon valence component, emphasizing states not found in the quark model. We predict that 0 ++ , 0 −+ , 1 ++ , and the particularly interesting 1 −+ glueballs will be narrow, with widths ranging from a few MeV to less than one MeV, and that spin 0 glueballs will mimic ss quarkonium states in their decay. We also comment on photonic couplings.

E (1440): GLUEBALL OR QUARKONIUM?

Abstract The most likely assignment of the E(1440) is that of an ordinary ss, L = 1, J PC = 1 ++ meson, rather than a flavor singlet meson or a J PC = 0 −+ or 1 ++ glueball.

Standard model constraints on fermions

We present a catalog of fermions allowed by the standard model. These new fermious are restricted to sets which are anomaly free, vector-like with respect to electric charge and color, and have either ΔIW = 0 (totally vector-like) or ΔIW = 12 (chiral) (masses). We list some simple examples where the anomaliesof the leptons (quarks) cancel among themselves as well as against each other.

A unitary symmetry selection rule and its application to new resonances

SummaryA selection rule is formulated, which forbids the decay into two pseudoscalar mesons of all members of a unitary multiplet containing a neutral boson which is odd underCP. It is applied to the classification of resonances like thex and B which decay into pseudoscalar vector mesons. An additional rule forbids the decay into two pseudoscalar mesons of all members of a tenfold multiplet which has even parity.RiassuntoSi formula una regola di selezione, che proibisce il decadimento in due mesoni pseudoscalari di tutti i membri di un multipletto unitario contenente un bosone neutro che è dispari rispetto aCP. Essa si applica alla classificazione di risonanze comex e B che decadono in mesoni pseudoscalari e vettoriali. Un’ulteriore regola proibisce il decadimento in due mesoni pseudoscalari di tutti i membri di un multipletto decuplo che ha parità pari.

Superheavy spectrum and supersymmetric grand unification.

Barbieri and Hall have argued that threshold effects at the scale of grand-unification wipe out predictions on the SUSY scale, M_S. Using triviality arguments we give upper bounds on ultraheavy particles, while proton stability gives lower bounds on the mass of the higgs color-triplet. We find no useful lower bound on the

BCS Mass Matricesa

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Glueballs: Advances, problems, mysteries

supermultiplet, but if the strong coupling constant is as large as recent experiments suggest, unification in the minimal SUSY SU(5) model requires that the

VERIFICATION OF THE TENFOLD ASSIGNMENT OF THE BARYON RESONANCES

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