Light-cone QCD sum rules for the Λ baryon electromagnetic form factors and its magnetic moment

被引：0
|
作者：
Yong-Lu Liu
Ming-Qiu Huang
Dao-Wei Wang
机构：
[1] National University of Defense Technology,Department of Physics
来源：
The European Physical Journal C | 2009年 / 60卷
关键词：
Form Factor; Distribution Amplitude; Large Momentum Transfer; Magnetic Form Factor; Electric Form Factor;
D O I：
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学科分类号：
摘要：
We present the light-cone QCD sum rules up to twist 6 for the electromagnetic form factors of the Λ baryon. To estimate the magnetic moment of the baryon, the magnetic form factor is fitted by the dipole formula. The numerical value of our estimation is μΛ=−(0.64±0.04)μN, which is in accordance with the experimental data and the existing theoretical results. We find that it is twist 4 but not the leading twist distribution amplitudes that dominate the results.
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页码：593 / 601
页数：8
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