A new mechanism for the electromagnetic transition γ<SUP>*</SUP> N→N<SUP>*</SUP> (1535)

AN Chun-Sheng; ZOU Bing-Song

doi:10.1088/1674-1137/34/2/017

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2010, Vol. 34> Issue(2) : 245-248 DOI: 10.1088/1674-1137/34/2/017

A new mechanism for the electromagnetic transition γ^* N→N^* (1535)

AN Chun-Sheng ,
ZOU Bing-Song ^,

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Abstract：
The helicity amplitude A^p_1/2 for the electromagnetic transition γ^* N→N^*(1535) is investigated. It is found that a new mechanism γ*→qq plays an important role in order to improve the description of this transition. On one hand, the A^p_1/2 is decreased to fall in the data range at the photon point Q²=0, while on the other hand, the new mechanism makes the function A^p_1/2(Q²) to decrease more slowly vs increasing Q², as required by the data.

References

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AN Chun-Sheng and ZOU Bing-Song. A new mechanism for the electromagnetic transition γ^* N→N^* (1535)[J]. Chinese Physics C, 2010, 34(2): 245-248. doi: 10.1088/1674-1137/34/2/017

AN Chun-Sheng and ZOU Bing-Song. A new mechanism for the electromagnetic transition γ^* N→N^* (1535)[J]. Chinese Physics C, 2010, 34(2): 245-248. doi: 10.1088/1674-1137/34/2/017 shu

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Received: 2009-08-27
Revised: 2009-09-15

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沈阳化工大学材料科学与工程学院沈阳 110142

A new mechanism for the electromagnetic transition γ^* N→N^* (1535)

AN Chun-Sheng
ZOU Bing-Song ^,

Corresponding author: ZOU Bing-Song,

Received Date: 2009-08-27
Accepted Date: 2009-09-15
Available Online: 2010-02-05

Abstract:

The helicity amplitude A^p_1/2 for the electromagnetic transition γ^* N→N^*(1535) is investigated. It is found that a new mechanism γ*→qq plays an important role in order to improve the description of this transition. On one hand, the A^p_1/2 is decreased to fall in the data range at the photon point Q²=0, while on the other hand, the new mechanism makes the function A^p_1/2(Q²) to decrease more slowly vs increasing Q², as required by the data.