Light-cone QCD sum rules for the Λ baryon electromagnetic form factors and its magnetic moment |
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Authors: | Yong-Lu Liu Ming-Qiu Huang Dao-Wei Wang |
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Institution: | (1) Department of Physics, National University of Defense Technology, Hunan, 410073, China |
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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±0.04)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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Keywords: | |
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