Study of nucleon resonances in a chiral quark model via η productions

HE Jun

doi:10.1088/1674-1137/33/12/062

Chinese Physics C> 2009, Vol. 33> Issue(12) : 1389-1392 DOI: 10.1088/1674-1137/33/12/062

Study of nucleon resonances in a chiral quark model via η productions

HE Jun ^,

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Abstract：
In this report we investigate η-meson productions on the proton via electromagnetic and hadron probes in a chiral quark model approach. The observables, such as, differential cross section and beam asymmetry for the two productions are calculated and compared with the experiment. The five known resonances S₁₁(1535), S₁₁(1650), P₁₃(1720), D₁₃(1520), and F₁₅(1680) are found to be dominant in the reaction mechanisms in both channels. Significant contribution from a new S₁₁ resonances are deduced. For the so-called ``missing resonances'', no evidence is found within the investigated reactions. The partial wave amplitudes for π^－p→ηn are also presented.

References

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HE Jun. Study of nucleon resonances in a chiral quark model via η productions[J]. Chinese Physics C, 2009, 33(12): 1389-1392. doi: 10.1088/1674-1137/33/12/062

HE Jun. Study of nucleon resonances in a chiral quark model via η productions[J]. Chinese Physics C, 2009, 33(12): 1389-1392. doi: 10.1088/1674-1137/33/12/062 shu

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Received: 2009-08-07
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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

Study of nucleon resonances in a chiral quark model via η productions

Corresponding author: HE Jun,

Received Date: 2009-08-07

Accepted Date: 1900-01-01

Available Online: 2009-12-05

Abstract:

In this report we investigate η-meson productions on the proton via electromagnetic and hadron probes in a chiral quark model approach. The observables, such as, differential cross section and beam asymmetry for the two productions are calculated and compared with the experiment. The five known resonances S₁₁(1535), S₁₁(1650), P₁₃(1720), D₁₃(1520), and F₁₅(1680) are found to be dominant in the reaction mechanisms in both channels. Significant contribution from a new S₁₁ resonances are deduced. For the so-called ``missing resonances'', no evidence is found within the investigated reactions. The partial wave amplitudes for π^－p→ηn are also presented.

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Study of nucleon resonances in a chiral quark model via η productions

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