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arXiv · hep-ph/0409296

Sigma Meson Cloud and Proton's Light Flavor Sea Quarks

Feng Huang·Rong-Guang Xu·Bo-Qiang Ma
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Abstract

We take into account the sigma meson cloud effect in the meson cloud model to calculate the distributions of light flavor sea quarks in the proton. Our calculation gives a better description of the data for $\bar{d}(x)/\bar{u}(x)$. We also provide a picture that the probability of finding a physical proton in a Fock state $|Nω> $ is reasonable small with a smaller cutoff $Λ_ω$.

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Feng Huang, Rong-Guang Xu, Bo-Qiang Ma. 2004-10-07. Sigma Meson Cloud and Proton's Light Flavor Sea Quarks. https://doi.org/10.1016/j.physletb.2004.09.052

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