English

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

High Energy Physics - Phenomenology 2010-04-21 v2

Abstract

We present the light-cone QCD sum rules up to twist 6 for the electromagnetic form factors of the Λ\Lambda 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\mu_\Lambda=-(0.64\pm0.04)\mu_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.

Keywords

Cite

@article{arxiv.0810.4973,
  title  = {Light-cone QCD Sum Rules for the $\Lambda$ Baryon Electromagnetic Form Factors and its magnetic moment},
  author = {Yong-Lu Liu and Ming-Qiu Huang and Dao-Wei Wang},
  journal= {arXiv preprint arXiv:0810.4973},
  year   = {2010}
}

Comments

13 page, 7 figures, accepted for publication in Euro. Phys. J. C

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