Sigma Meson Cloud and Proton's Light Flavor Sea Quarks

Details Sigma Meson Cloud and Proton's Light Flavor Sea Quarks Sigma Meson Cloud and Proton's Light Flavor Sea Quarks

2004-09-26

arxiv.org/abs/hep-ph/0409296v2

Phys.Lett. B602 (2004) 67-72

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 latex pages, 4 figures. Version to appear in PLB

Scientific paper

10.1016/j.physletb.2004.09.052

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 $|N\omega> $ is reasonable small with a smaller cutoff $\Lambda_{\omega}$.

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