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arXiv · 1610.08817

Meson cloud effects on the pion quark distribution function in the chiral constituent quark model

Akira Watanabe·Chung Wen Kao·Katsuhiko Suzuki
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Abstract

We investigate the valence quark distribution function of the pion $v^{\pi}(x,Q^2)$ in the framework of the chiral constituent quark model and evaluate the meson cloud effects on $v^{\pi}(x,Q^2)$. We explicitly demonstrate how the meson cloud effects affect $v^{\pi}(x,Q^2)$ in detail. We find that the meson cloud correction causes an overall 32\% reduction of the valence quark distribution and an enhancement at the small Bjorken $x$ regime. Besides, we also find that the dressing effect of the meson cloud will make the valence quark distribution to be softer in the large $x$ region.

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Akira Watanabe, Chung Wen Kao, Katsuhiko Suzuki. 2016-10-27. Meson cloud effects on the pion quark distribution function in the chiral constituent quark model. https://doi.org/10.1103/physrevd.94.114008

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