Monte Carlo Glauber model with meson cloud: predictions for 5.44 TeV Xe + Xe collisions
Abstract
We study, within the Monte-Carlo Glauber model, centrality dependence of the midrapidity charged multiplicity density dN_{ch}/dη and of the anisotropy coefficients ɛ _{2,3} in Pb + Pb collisions at √{s}=5.02 TeV and in Xe + Xe collisions at √{s}=5.44 TeV. Calculations are performed for versions with and without nucleon meson cloud. The fraction of the binary collisions, α , has been fitted to the data on dN_{ch}/dη in Pb + Pb collisions. We obtain α ≈ 0.09(0.13) with (without) meson cloud. The effect of meson cloud on the dN_{ch}/dη is relatively small. For Xe + Xe collisions for 0-5% centrality bin we obtain dN_{ch}/dη ≈ 1149 and 1134 with and without meson cloud, respectively. We obtain ɛ _2(Xe)/ɛ _2(Pb)∼ 1.45 for most central collisions, and ɛ _2(Xe)/ɛ _2(Pb) close to unity at [InlineEquation not available: see fulltext.]. 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 [InlineEquation not available: see fulltext.]. We obtain ɛ _3( Xe )/ɛ _3( Pb )∼ 1.3 at [InlineEquation not available: see fulltext.].
- Publication:
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European Physical Journal C
- Pub Date:
- May 2018
- DOI:
- 10.1140/epjc/s10052-018-5924-8
- arXiv:
- arXiv:1804.05405
- Bibcode:
- 2018EPJC...78..427Z
- Keywords:
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- Nuclear Theory;
- High Energy Physics - Phenomenology
- E-Print:
- 9 pages, 8 figures