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Monte Carlo Glauber model with meson cloud: predictions for 5.44 TeV Xe + Xe collisions
Authors:B. G. Zakharov
Affiliation:1.L.D.?Landau Institute for Theoretical Physics,Moscow,Russia
Abstract:We study, within the Monte-Carlo Glauber model, centrality dependence of the midrapidity charged multiplicity density (dN_{ch}/deta ) and of the anisotropy coefficients (varepsilon _{2,3}) in Pb + Pb collisions at (sqrt{s}=5.02) TeV and in Xe + Xe collisions at (sqrt{s}=5.44) TeV. Calculations are performed for versions with and without nucleon meson cloud. The fraction of the binary collisions, (alpha ), has been fitted to the data on (dN_{ch}/deta ) in Pb + Pb collisions. We obtain (alpha approx 0.09(0.13)) with (without) meson cloud. The effect of meson cloud on the (dN_{ch}/deta ) is relatively small. For Xe + Xe collisions for 0–5% centrality bin we obtain (dN_{ch}/deta approx 1149) and 1134 with and without meson cloud, respectively. We obtain (varepsilon _2(mathrm {Xe})/varepsilon _2(mathrm {Pb})sim 1.45) for most central collisions, and (varepsilon _2(mathrm {Xe})/varepsilon _2(mathrm {Pb})) close to unity at Open image in new window /></a> </span>. We find a noticeable increase of the eccentricity in Xe + Xe collisions at small centralities due to the prolate shape of the Xe nucleus. The triangularity in Xe + Xe collisions is bigger than in Pb + Pb collisions at <span class= Open image in new window /></a> </span>. We obtain <span class=(varepsilon _3(text{ Xe })/varepsilon _3(text{ Pb })sim 1.3) at Open image in new window /></a> </span>.</td>
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