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arXiv · 2303.07654

The improved saturation model in nuclei

G. R. Boroun·B. Rezaei
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Abstract

We consider the nuclear shadowing in deep-inelastic scattering corresponding to kinematic regions accessible by future experiments at electron-ion colliders. The gluon distribution at small $x$ is obtained using an improved dipole model depended on the impact parameter for atomic nucleus and compared with nCETQ15 parametrization group. The nuclear shadowing at small $x$ is defined within the color dipole formalism with respect to the mass number $A$. Its behavior is predicted for light nuclei in a wide range of the impact parameter $b$ and the transverse dipole size $r$. The nuclear saturation at large-$r$ (small $\mu^2$) is observable. The behavior of the nuclear ratio $\sigma^{A}_{\mathrm{dip}}/\sigma_{0}$ is similar to the Golec-Biernat-W$\ddot{\mathrm{u}}$sthoff (GBW) model in a wide range of $r$ for light and heavy nuclei at small $x$.

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G. R. Boroun, B. Rezaei. 2023-03-14. The improved saturation model in nuclei. https://doi.org/10.1007/s12043-024-02854-8

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