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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The helicity amplitude A^p_1/2for 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_1/2is 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_1/2for 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_1/2is 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.