Electromagnetic form factors of ${\Lambda }_b$ in the Bethe-Salpeter equation approach

Abstract

The heavy baryon ${\Lambda }_b$ is regarded as composed of a heavy quark and a scalar diquark which has good spin and isospin quantum numbers. In this picture, we calculate the electromagnetic (EM) form factors of ${\Lambda }_b$ in the Bethe-Salpeter equation approach. We find that the shapes of the EM form factors of ${\Lambda }_b$ are similar to those of $\Lambda$, which have a peak at about $\omega =1$, but the amplitudes are much smaller than those of $\Lambda$.

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Cited by in corpus (3)

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• Studying the bound state of the $K^{-}p$ system in the Bethe-Salpeter formalism
• Mass spectra, wave functions and mixing effects of the $(bcq)$ baryon