# Gluon saturation and baryon stopping in the SPS, RHIC, and LHC energy regions

• A new geometrical scaling method with a gluon saturation rapidity limit is proposed to study the gluon saturation feature of the central rapidity region of relativistic nuclear collisions. The net-baryon number is essentially transported by valence quarks that probe the saturation regime in the target by multiple scattering. We take advantage of the gluon saturation model with geometric scaling of the rapidity limit to investigate net baryon distributions, nuclear stopping power and gluon saturation features in the SPS and RHIC energy regions. Predictions for net-baryon rapidity distributions, mean rapidity loss and gluon saturation feature in central Pb+Pb collisions at the LHC are made in this paper.
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LI Shuang and FENG Sheng-Qin. Gluon saturation and baryon stopping in the SPS, RHIC, and LHC energy regions[J]. Chinese Physics C, 2012, 36(2): 136-141. doi: 10.1088/1674-1137/36/2/006
LI Shuang and FENG Sheng-Qin. Gluon saturation and baryon stopping in the SPS, RHIC, and LHC energy regions[J]. Chinese Physics C, 2012, 36(2): 136-141.
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Revised: 2011-07-29
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沈阳化工大学材料科学与工程学院 沈阳 110142

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## Gluon saturation and baryon stopping in the SPS, RHIC, and LHC energy regions

###### Corresponding author: FENG Sheng-Qin,

Abstract: A new geometrical scaling method with a gluon saturation rapidity limit is proposed to study the gluon saturation feature of the central rapidity region of relativistic nuclear collisions. The net-baryon number is essentially transported by valence quarks that probe the saturation regime in the target by multiple scattering. We take advantage of the gluon saturation model with geometric scaling of the rapidity limit to investigate net baryon distributions, nuclear stopping power and gluon saturation features in the SPS and RHIC energy regions. Predictions for net-baryon rapidity distributions, mean rapidity loss and gluon saturation feature in central Pb+Pb collisions at the LHC are made in this paper.

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