Research of SU(3) 27-plet

ZHOU Qi-Hua; MA Bo-Qiang

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2007, Vol. 31> Issue(1) : 1-6

Research of SU(3) 27-plet

ZHOU Qi-Hua ,
MA Bo-Qiang ^,

School of Physics, Peking University, Beijing 100871, China

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Abstract：
Exotics belong to high multiplet of SU(3), so one can understand them by researching their non-exotic partners in the same multiplet. Here the possible 27-plet from flavor SU(3) symmetry are investigated. By fitting the mass spectrum and calculating the two-body partial hadronic decay widths of members, two set of 27-plet baryons with different parities are found. For the mass spectrum, all non-exotic members have their candidates in PDG except for a new Λ(1780). For the decay widths, the computing results show the approximate flavor SU(3) symmetry. The further analyzing and comparing with the results from other theoretical models can support the rationality of the 27-plet assignment.

References

[1]

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ZHOU Qi-Hua and MA Bo-Qiang. Research of SU(3) 27-plet[J]. Chinese Physics C, 2007, 31(1): 1-6.

ZHOU Qi-Hua and MA Bo-Qiang. Research of SU(3) 27-plet[J]. Chinese Physics C, 2007, 31(1): 1-6. shu

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Received: 2006-04-13
Revised: 2006-06-12

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沈阳化工大学材料科学与工程学院沈阳 110142

Research of SU(3) 27-plet

ZHOU Qi-Hua
MA Bo-Qiang ^,

Corresponding author: MA Bo-Qiang,

School of Physics, Peking University, Beijing 100871, China

Received Date: 2006-04-13
Accepted Date: 2006-06-12
Available Online: 2007-01-05

Abstract: Exotics belong to high multiplet of SU(3), so one can understand them by researching their non-exotic partners in the same multiplet. Here the possible 27-plet from flavor SU(3) symmetry are investigated. By fitting the mass spectrum and calculating the two-body partial hadronic decay widths of members, two set of 27-plet baryons with different parities are found. For the mass spectrum, all non-exotic members have their candidates in PDG except for a new Λ(1780). For the decay widths, the computing results show the approximate flavor SU(3) symmetry. The further analyzing and comparing with the results from other theoretical models can support the rationality of the 27-plet assignment.