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ASSIGNMENTS OF THE BARYON RESONANCES IN S?(12) AND THEIR STRONG-DECAYS

MA CHUNG-CHI LIU LIAN-SOU CHEN JI

ASSIGNMENTS OF THE BARYON RESONANCES IN S?(12) AND THEIR STRONG-DECAYS

MA CHUNG-CHI, LIU LIAN-SOU, CHEN JI
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  • Received Date:  26 July 1965
  • Published Online:  05 August 2005

ASSIGNMENTS OF THE BARYON RESONANCES IN S?(12) AND THEIR STRONG-DECAYS

  • 1. 北京大学物理系

Abstract: The assignments of resonances (3/2)-,(1/2)- and (7/2)+ within the multiplets of S?(12) andtheir strong-decays are discussed. It is found that the ((1/2)++0-) decay modes of the (3/2)- particles belonging to the multiplets 16016 and 35100 are forbidden. By redefining the parity of the representations by changing the sign of the massterms in the wave-equations, it is possible to assign the particles ((3/2)-,8) and ((1/2)-,1) in the representation 572. However,the decays of ((3/2)-,1) and (7/2)+ particles through an effective vertex with S?(12) symmetryare still forbidden. The success and failure of S?(l2) in the problem of classification and strong-decays of elementary particles are analysed and discussed in detail.

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