Journal ArticleDOI
Strong isospin violation andη−π mixing in |ΔS|=1 weak transition
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In this article, the effects of η−π mixing on the violation of the |ΔI|=1/2 rule in weak transitions were considered. But the effects were not considered in the case of K→2π, K→3π, Λ, Ξ and Λ hyperon decays.Abstract:
We consider the effects ofη−π mixing on the violation of the |ΔI|=1/2 rule in |ΔS|=1 weak transitions. The processes considered are theK→2π,K→3π, Λ, Ξ and Λ hyperon decays.read more
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Isospin violation in Delta S=1 weak transitions-a re-examination
TL;DR: In this article, the violation of the Delta I = 1/2 rule and the effects of the isospin violation in Delta S = 1 weak transitions are analysed for the K to 2 pi, K to 3 pi, angle, Xi and Sigma hyperon decays.
References
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Journal ArticleDOI
Symmetry Breaking Through Bell-Jackiw Anomalies
TL;DR: In this article, it was shown that nonperturburbative effects can give rise to interactions that violate the charge conservation in models of fermions coupled to gauge fields and that the total charge corresponding to such currents seems to be still conserved.
Journal ArticleDOI
The decays ψ';'→J/ψ+π0(η) and quark masses
Boris L Ioffe,Mikhail A. Shifman +1 more
TL;DR: In this paper, a model-independent theoretical prediction for the ratio of the decay rates based only on the QCD lagrangian and certain low-energy theorems was obtained.
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Measurement of the decays psi'. -->. etaJ/psi and psi'. --> pi. /sup 0/J/psi
M. J. Oreglia,Elliott D. Bloom,F. Bulos,R. Chestnut,J. Gaiser,G.L. Godfrey,C. Kiesling,R. Partridge,C. W. Peck,F. C. Porter,W. Kollmann,M. Richardson,K. Strauch,K. Wacker,D. Aschman,T. H. Burnett,Matteo Cavalli-Sforza,D. C. Coyne,H. F.W. Sadrozinski,R. Hofstadter,I. Kirkbride,Hermann Kolanoski,A. Liberman,J. O'Reilly,J. Tompkins +24 more
TL;DR: In this article, the branching ratio of the eta mode is (2.18 +- 0.35)%, where the first error results from statistics and acceptance uncertainties, and the second error is systematic; this is almost a factor of 2 smaller than found in early experiments.
Journal ArticleDOI
The 1+− state and ψ spectroscopy
G. Segrè,Jacques Weyers +1 more
TL;DR: In this article, it was shown that ψ → ψ H π O (where ψH is the 1 +− state) may be an important decay mode of the ψ system.