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The Production of Mesons by Photons

The Production of Mesons by Photons
Author: Keith A. Brueckner
Publisher:
Total Pages: 40
Release: 1950
Genre: Mesons
ISBN:

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The general features of the process of photon-meson production are discussed on a semi-classical basis and also on the basis of perturbation theory in the weak coupling approximation applied to scalar, pseudoscalar, vector, and pseudovector meson theory. These calcuations are carried out with the Feynman-Dyson methods to give covariant expressions for the cross sections.


The Excess of Negative Over Positive Mesons Produced by High Energy Photons

The Excess of Negative Over Positive Mesons Produced by High Energy Photons
Author: Keith A. Brueckner
Publisher:
Total Pages: 8
Release: 1950
Genre: Mesons
ISBN:

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Mesons produced by the high energy photon beam from the University of California Radiation Laboratory 330 Mev synchrotron are found to show an excess of negatives over positives. (1) With a carbon target, observing mesons in the energy range 30-130 Mev at 90© to the photon beam, the ratio of negative to positive mesons is 1.7 ℗± 0.2 with no significant energy dependence.