Il Nuovo Cimento A (1965-1970)

, Volume 44, Issue 4, pp 1210–1218 | Cite as

Effective ΔI=1/2 rule in the three-pion decays of kaons

  • P. Roman
  • S. K. Yun


The universal nonleptonic weak Hamiltonian of ref. (1, 2) is used to compute, without further dynamical assumptions, the decay amplitudes for all K→πππ processes. The results can be expressed in terms of two parameters. An effective ΔI=1/2 rule is obtained, and some interesting structural features are noted.


Decay Amplitude Reduction Coefficient Dynamical Assumption Internal Quantum Number Kaon 
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Si usa l'hamiltoniano debole, non leptonico, universale delle ref. (1, 2) per calcolare, senza ulteriori ipotesi dinamiche, le ampiezze di decadimento di tutti i processi K→πππ. I risultati possono essere espressi in funzione di due parametri. Si ottiene una regola ΔI=1/2 effettiva e si rilevano alcune interessanti caratteristiche strutturali.


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Copyright information

© Società Italiana di Fisica 1966

Authors and Affiliations

  • P. Roman
    • 1
  • S. K. Yun
    • 1
  1. 1.Department of PhysicsBoston UniversityBoston

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