The study of deep inelastic scattering process of electron nucleus at LHeC region

Heidari, S.; Rezaei, B.; Boroun, G. R.

doi:10.1142/s0218301317500677

Cited by 4 publications

(1 citation statement)

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“…A depletion in this ratio is called "shadowing", whereas an enhancement is called "anti-shadowing". The anti-shadowing is related to the coherent multiple scattering where it introduces the medium size enhanced (in powers of A 1/3 ) nuclear effects [41][42][43][44][45][46]. The nuclear shadowing is controlled by the interplay of photon lifetime and coherent time fluctuations for transition between no shadowing and saturated shadowing at very small x [47,48].…”

Section: The Results For Shadowing Effects In the Gluon Distribution ...mentioning

confidence: 99%

Saturation Approach in Top Production

Boroun

2018

Phys. Part. Nuclei Lett.

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We develop the relationship between the gluon distribution obtained using a dipole model fitted to low x data on the proton structure function for nuclear shadowing in deep-inelastic scattering corresponding to kinematic regions accessible by the future experiments at electron-ion colliders. The improved dipole model on the impact parameter for nuclei shows the nuclear shadowing at small-x and the nuclear saturation at large-r. Nuclear shadowing is treated within the color dipole formalism with respect to the mass number A. The magnitude of nuclear shadowing in the impact parameter saturation model (IP-sat) is predicted for light nuclei in a wide range of the impact parameter b and the transverse dipole size r. We compare the model, originally proposed for gluon density within the dipole framework long ago by R.S.Thorne, with nCETQ15 and show that the nuclear ratio σ A dip /σ0 has a similar behavior with the Golec-Biernat-Wüsthoff (GBW) model in a wide range of r and A at low x. We find that at x = 10 −6 and for heavy nuclei, the ratio of dipole cross sections have a saddle-shaped behavior in the range 2×10 −2 r 2×10 −1 fm, whose magnitude increases with an increase of the atomic number A. This behavior becomes softer when the qqg components in the diffractive systems are considered.

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