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arXiv · 0810.4973

Light-cone QCD Sum Rules for the $Λ$ Baryon Electromagnetic Form Factors and its magnetic moment

Yong-Lu Liu·Ming-Qiu Huang·Dao-Wei Wang
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Abstract

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 $μ_Λ=-(0.64\pm0.04)μ_N$, 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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Yong-Lu Liu, Ming-Qiu Huang, Dao-Wei Wang. 2009-04-02. Light-cone QCD Sum Rules for the $Λ$ Baryon Electromagnetic Form Factors and its magnetic moment. https://doi.org/10.1140/epjc%2Fs10052-009-0971-9

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