Il Nuovo Cimento (1955-1965)

, Volume 20, Issue 6, pp 1228–1230 | Cite as

On the symplectic symmetry

  • A. Salam
  • J. C. Ward
Lettere Alla Redazione


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    M. Gell-Mann (preprint). We are grateful to ProfessorM. Gell-Mann for sending us a preprint before publication;Y. Neeman:Nucl. Phys. (to be published);A. Salam andJ. C. Ward:Nuovo Cimento, to be published (1961).Google Scholar
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    There is some evidence from Dubna for the existence of the W+ particle (Kiev Conference Report, 1959) (not to be published). There is no evidence so far, for the existence of the X-particles. If these particles are really missing, the considerations of the present note would become unrealistic and the 3-dimensional unitary symmetry (4) remains the nearest approximation to facts in either the form suggested byNeeman andGell-Mann or in the Sakata form adopted bySalam andWard. The first form predicts the same (Λ, Σ) relative parity while for the second form this is not essential, but both predict the existence of eight vector bosons.Google Scholar

Copyright information

© Società Italiana di Fisica 1961

Authors and Affiliations

  • A. Salam
    • 1
  • J. C. Ward
    • 2
  1. 1.Imperial CollegeLondon
  2. 2.Institute for Advanced StudyPrinceton

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