Resonance production in the γγ→ππ process and low energy parameters

  • A. E. Kaloshin
  • V. V. Serebryakov
Article
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Abstract

The amplitudes of the γγ→ππ reaction are obtained describing the process up to the energy of 1.5 GeV. It is shown that in thef-meson region there exists large background with the isospinI=2. This background and the backgrounds of the known mechanisms deal with the threshold expansion of the amplitude. This allows one to give polarizability estimate of the pion (α +β) π+ =0.45·10−+fm, (α+β)π0. We predict a very small cross-section for the production of a broad ε (700) by using the low energy normalization.

Keywords

Field Theory Elementary Particle Quantum Field Theory Particle Acceleration Energy Parameter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • A. E. Kaloshin
    • 1
  • V. V. Serebryakov
    • 1
  1. 1.Institute of MathematicsNovosibirsk 90USSR

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