Evidence for a new resonance Σ*(1380) with JP=1/2－

WU Jia-Jun; ZOU Bing-Song

doi:10.1088/1674-1137/34/9/086

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1508-1511 DOI: 10.1088/1674-1137/34/9/086

Evidence for a new resonance Σ^(1380) with J^P*=1/2^－

WU Jia-Jun ^1,, ,
ZOU Bing-Song

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Abstract：
A new particle Σ* with J^P=1/2^－ was predicted by unquenched quark models with its mass around the well established Σ(1385) with J^P=3/2⁺. Here we re-examine some old data of the K^－p→Λπ⁺π^－ reaction. Firstly we re-fit the data for kaon beam momenta in the range of 1.0－1.8 GeV. Secondly we study the reaction at the energies around Λ^*(1520) peak. Both studies show evidence for the existence of Σ^* with J^P=1/2－ around 1380 MeV. Higher statistic data on relevant reactions are needed to clarify the situation.

References

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WU Jia-Jun and ZOU Bing-Song. Evidence for a new resonance Σ^*(1380) with J^P=1/2^－[J]. Chinese Physics C, 2010, 34(9): 1508-1511. doi: 10.1088/1674-1137/34/9/086

WU Jia-Jun and ZOU Bing-Song. Evidence for a new resonance Σ^*(1380) with J^P=1/2^－[J]. Chinese Physics C, 2010, 34(9): 1508-1511. doi: 10.1088/1674-1137/34/9/086 shu

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Received: 2010-03-04
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Evidence for a new resonance Σ^*(1380) with J^P=1/2^－

Corresponding author: WU Jia-Jun,

Received Date: 2010-03-04

Accepted Date: 1900-01-01

Available Online: 2010-09-05

Abstract:

A new particle Σ* with J^P=1/2^－ was predicted by unquenched quark models with its mass around the well established Σ(1385) with J^P=3/2⁺. Here we re-examine some old data of the K^－p→Λπ⁺π^－ reaction. Firstly we re-fit the data for kaon beam momenta in the range of 1.0－1.8 GeV. Secondly we study the reaction at the energies around Λ^*(1520) peak. Both studies show evidence for the existence of Σ^* with J^P=1/2－ around 1380 MeV. Higher statistic data on relevant reactions are needed to clarify the situation.

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Evidence for a new resonance Σ^(1380) with J^P*=1/2^－

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