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A Caltech Library Repository Feedhttp://www.rssboard.org/rss-specificationpython-feedgenenMon, 27 Nov 2023 20:05:04 +0000Topics in Theoretical Physics: Lecture Notes from Ph. 234
https://resolver.caltech.edu/CaltechAUTHORS:20131204-125025160
Authors: Wagner, William G.; Gell-Mann, Murray
Year: 1959
Lecture notes from Ph. 234 taught by Dr. Murray Gell-Mann; written by William G. Wagnerhttps://authors.library.caltech.edu/records/fzkmv-gce91Decay rates of Neutral Mesons
https://resolver.caltech.edu/CaltechAUTHORS:20120815-115746596
Authors: Gell-Mann, M.; Wagner, W. G.
Year: 1962
DOI: 10.1103/PhysRevLett.8.261
The partial width for the observed decay mode ω→π^++π^-+π^0 can be estimated by assuming, in the sense of dispersion theory, that the process is dominated by ω→p+π followed by p→2π. We treat p as a nearly stable particle and define a
coupling parameter f_(ωpπ).https://authors.library.caltech.edu/records/hm97d-2ph23M meson and a generalization of the Pomeranchuk relations
https://resolver.caltech.edu/CaltechAUTHORS:WAGpr62
Authors: Wagner, William G.; Sharp, David H.
Year: 1962
DOI: 10.1103/PhysRev.128.2899
Under the hypothesis that a K-π resonance is vector, we examine its role in the associated production of Λ by π and in Λ production by K. We shall demonstrate the existence of a new symmetry between two reaction amplitudes. This symmetry may be regarded as a generalization of Pomeranchuk's relations and should appear at high energies and low momentum transfers when both amplitudes are dominated by the same pole or pseudopole, as is to be expected according to the Regge pole hypothesis. Specifically, we find, in considering the details of the role of a strange vector meson in the processes π+N→Λ+K and K +N→Λ+π, that the associated production amplitude in the forward direction (for the K) at high energies is asymptotically equal to the negative of the amplitude characterizing Λ production by a K. The contribution of the dominant pole terms in these amplitudes is constructed for the high-energy limit and the energy and momentum transfer dependences are compared for the alternative hypothesis of composite or elementary particle behavior of a pole term. We discuss experiments which are needed to supply data for a test of the Regge pole hypothesis. The results of these experiments, which are feasible with the new large accelerators, will be most important as guides for the construction of theories of the strong interactions.https://authors.library.caltech.edu/records/06qcc-bwz70A Note on the Leptonic Decays of the K-Meson
https://resolver.caltech.edu/CaltechAUTHORS:20180130-102129234
Authors: Sharp, David H.; Wagner, William G.
Year: 2018
DOI: 10.7907/Z93776XS
In this note we present an analysis of the leptonic decay modes of the K-meson in terms of a four-parameter representation of the two form factors F1(q^2) and F3(q^2) which describe the matrix element of the vector current of the weak interactions, < π |Vα| K >. Such a representation, while general enough to take account of the violation of the ΔΙ = 1/2 rule and the possible existence of two resonances in the K-π system, no longer permits unique predictions for the ratio of the electron to muon decay rate, or of the pion spectrum. We therefore suggest that experiments be carried out to determine the four unknown parameters, and theoretical attention be turned to relating these parameters to measurable quantities occurring in related processes.https://authors.library.caltech.edu/records/ywdxx-yqr58