Gluon saturation and net-proton spectra in relativistic nucleus-nucleus collisions

WANG Hong-Min; HOU Zhao-Yu; WANG Xiu-Ting; SUN Xian-Jing

doi:10.1088/1674-1137/35/3/008

Chinese Physics C> 2011, Vol. 35> Issue(3) : 255-258 DOI: 10.1088/1674-1137/35/3/008

Gluon saturation and net-proton spectra in relativistic nucleus-nucleus collisions

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By means of the AKK08 fragmentation function, the net-proton transverse momentum (pT) spectra in A+A collisions are studied with two phenomenological models based on the Color Glass Condensate formalism. After a χ² analysis of the experimental data from BRAHMS, the normalization constant C is extracted at RHIC energies of √sNN=62.4 and 200 GeV, and the theoretical results of the net-proton pT spectra at selected rapidities are also given. It is shown that the theoretical results are in good agreement with the experimental data. Finally, assuming the constant C should have an exponent dependence of √sNN, we also predict the theoretical results of net-proton pT spectra at LHC energies of √sNN=2.76, 3.94, and 5.52 TeV.

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WANG Hong-Min, HOU Zhao-Yu, WANG Xiu-Ting and SUN Xian-Jing. Gluon saturation and net-proton spectra in relativistic nucleus-nucleus collisions[J]. Chinese Physics C, 2011, 35(3): 255-258. doi: 10.1088/1674-1137/35/3/008

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Received: 2010-06-23
Revised: 2010-06-12

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沈阳化工大学材料科学与工程学院沈阳 110142

Gluon saturation and net-proton spectra in relativistic nucleus-nucleus collisions

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Gluon saturation and net-proton spectra in relativistic nucleus-nucleus collisions

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