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Journal ArticleDOI

KrmL→π0π0γγ in chiral perturbation theory

07 Nov 1991-Physics Letters B (North-Holland)-Vol. 270, Iss: 1, pp 45-50
TL;DR: In this paper, the rate and two-photon spectrum for the decay KrmL→π0π0γγ using chiral perturbation theory were calculated and the implications of the study of this decay were discussed.
About: This article is published in Physics Letters B.The article was published on 1991-11-07. It has received 7 citations till now. The article focuses on the topics: Chiral perturbation theory & Chiral anomaly.
Citations
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Journal ArticleDOI
TL;DR: In the low-energy frontier, the main goal is to perform precision tests of the standard theory and to make up for the smaller energies, high sensitivity is an indispensable requirement (factories).

455 citations

Journal ArticleDOI
TL;DR: An introduction to chiral perturbation theory is given in this article, including a discussion of power counting, the Wess-Zumino term, the values of the coupling constants and the inclusion of the effects of other resonances.
Abstract: An introduction to Chiral Perturbation Theory is given including a discussion of power counting, the Wess-Zumino term, the values of the coupling constants and the inclusion of the effects of other resonances.

381 citations

Journal ArticleDOI
TL;DR: A comprehensive overview of kaon decays is presented in this article, covering both the underlying short-distance electroweak dynamics and the important interplay of QCD at long distances.
Abstract: A comprehensive overview of kaon decays is presented The standard model predictions are discussed in detail, covering both the underlying short-distance electroweak dynamics and the important interplay of QCD at long distances Chiral perturbation theory provides a universal framework for treating leptonic, semileptonic, and nonleptonic decays including rare and radiative modes All allowed decay modes with branching ratios of at least ${10}^{\ensuremath{-}11}$ are analyzed Some decays with even smaller rates are also included Decays that are strictly forbidden in the standard model are not considered in this review The present experimental status and the prospects for future improvements are reviewed

316 citations

Journal ArticleDOI
TL;DR: A consistent census of penguins in the Delta I = 1/2 rule is taken from the eta0 pole contribution to the radiative KL to gamma gamma, KS to pi0 gamma gamma and K+ to pi+ gamma gamma decay modes as mentioned in this paper.

60 citations

Journal ArticleDOI
TL;DR: In this article, a survey of the rare anomalous decays K → ππγγ and K → 3 πγ ( γ), including some numerical estimates, is presented.

46 citations

References
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Journal ArticleDOI
Susumu Okubo1
TL;DR: In this article, a mass formula for particles belonging to the same irreducible representation is derived and compared with experiments, assuming invariance of a theory under three-dimensional unitary group.
Abstract: Assuming invariance of a theory under three-dimensional unitary group, various consequences are investigated. Both the Sakata and Gell-Mann schemes can be treated in this fashion in a simple way. A mass formula for particles belonging to the same irreducible representation is derived and compared with experiments. (auth)

591 citations

Journal ArticleDOI
TL;DR: In this article, the strangeness-changing nonleptonic weak interactions of the pseudoscalar mesons were investigated in the framework of the effective low-energy chiral lagrangian.

180 citations

Journal ArticleDOI
TL;DR: In this article, the effects due to intrinsic CP violation in the amplitudes are investigated in chiral perturbation theory and the decay rate and spectra are predicted in terms of coupling constants not restricted by softly broken chiral symmetry alone.

175 citations

Journal ArticleDOI
TL;DR: In this article, the decays of KL,S → π0γγ were calculated within the framework of chiral perturbation theory and the amplitude for KL → γγ was found to be finite at the one-loop level yielding a branching ratio of 6.8 × 10−7.

92 citations

Journal ArticleDOI
TL;DR: In this paper, the decays of the chiral lagrangians were studied in the framework of chiral Lagrangians and it was shown that the long distance dispersive part of KL → μ+μ− is the dominant one.

91 citations