scispace - formally typeset
Search or ask a question
Journal ArticleDOI

Asymptotic SU 5 and a new mass constraint for the ω, ϕ, ψ and γ mesons

01 Feb 1979-Lettere Al Nuovo Cimento (Società Italiana di Fisica)-Vol. 24, Iss: 6, pp 175-178
About: This article is published in Lettere Al Nuovo Cimento.The article was published on 1979-02-01. It has received 2 citations till now. The article focuses on the topics: Constraint (information theory) & Meson.
Citations
More filters
Journal ArticleDOI
TL;DR: By assuming the existence of (quasi-linear Regge trajectories for 25-plet mesons in the low-energy region, this paper derived a new 14th power meson mass relation.
Abstract: By assuming the existence of (quasi)-linear Regge trajectories for 25-plet mesons in the low-energy region, we derive a new, 14th power, meson mass relation. This relation may be reduced to a quadratic Gell-Mann-Okubo-type formula by fitting the values of the Regge slopes of these (quasi)-linear trajectories. Such a formula holds with an accuracy of % for vector mesons, and also suggests that the quantum number should be assigned to both the and mesons discovered recently. We also discuss reasons for the failure of group theory to produce correct mass relations for heavy quarkonia.

11 citations

Journal ArticleDOI
TL;DR: The recent hypothesis of a new fifth quark flavour, beauty (or bottom), following from the discovery of the gamma resonances, is considered here in the context of the Weinberg spectral-function sum rules as mentioned in this paper.
Abstract: The recent hypothesis of a possible new fifth quark flavour, beauty (or bottom), following from the discovery of the gamma resonances, is considered here in the context of the Weinberg spectral-function sum rules. The authors find as a consequence new equal-spacing mass relations and general mass constraints for the vector mesons with the new flavour. In a restricted symmetry domain they predict the masses of some of these mesons and discuss the results in so far as they shed light on the breaking of SU(5) symmetry and the approximations involved in the Weinberg sum rules.

2 citations

References
More filters
Journal ArticleDOI
TL;DR: In this paper, the moments of the spectral functions of the vector and axial vector currents were derived, and two sum rules were derived for relating moments of spectral functions, and it was shown that if it is assumed that the $\ensuremath{\rho}$ and $A1$ mesons dominate these moments, then their masses must be in the ratio
Abstract: Two sum rules are derived, relating moments of the spectral functions of the vector and axial-vector currents. If it is assumed that the $\ensuremath{\rho}$ and $A1$ mesons dominate these moments, then their masses must be in the ratio $\frac{{m}_{A1}}{{m}_{\ensuremath{\rho}}}=\sqrt{2}$, in very good agreement with experiment.

940 citations

Journal ArticleDOI
TL;DR: Dimuon production in 400-GeV proton-nucleus collisions was studied in this paper, where a strong enhancement was observed at 9.5 GeV mass in a sample of 9000 dimuon events with a mass
Abstract: Dimuon production is studied in 400-GeV proton-nucleus collisions. A strong enhancement is observed at 9.5 GeV mass in a sample of 9000 dimuon events with a mass ${m}_{{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}}g5$ GeV.

878 citations

Journal ArticleDOI
TL;DR: Using the algebra of currents and the sum rules recently derived by Weinberg, this article calculated the electromagnetic mass difference of pions and obtaim mπ+−mπ0≃5.0 MeV.
Abstract: Using the algebra of currents and the sum rules recently derived by Weinberg, we calculate the electromagnetic mass difference of pions and obtaim mπ+−mπ0≃5.0 MeV.

310 citations

Journal ArticleDOI
TL;DR: In this article, the SU(3) group will be exact at infinite energy, and several sum rules based on the assumption that the SU group is exact at infinity energy have been derived.
Abstract: We have derived several sum rules based upon the assumption that the SU(3) group will be exact at infinite energy. In this way, decays of vector mesons into lepton pairs have been computed together with the decay rate for y KK.

96 citations

Journal ArticleDOI
TL;DR: In this paper, the authors presented results of calculations based on a new field theory of matter, which utilizes an analogy between nucleonic charge and electric charge, and predicted predictions of these calculations are discussed.
Abstract: Results of calculations based on a new field theory of matter are presented. The theory utilizes an analogy between nucleonic charge and electric charge. Predictions of these calculations are discussed. (R.E.U.)

75 citations