تقرير
Predictions for multiplicities and flow harmonics in 5.44 TeV Xe+Xe collisions at the CERN Large Hadron Collider
| العنوان: | Predictions for multiplicities and flow harmonics in 5.44 TeV Xe+Xe collisions at the CERN Large Hadron Collider |
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| المؤلفون: | Eskola, K. J., Niemi, H., Paatelainen, R., Tuominen, K. |
| المصدر: | Phys. Rev. C 97, 034911 (2018) |
| سنة النشر: | 2017 |
| المجموعة: | High Energy Physics - Phenomenology Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Nuclear Theory |
| الوصف: | We present the next-to-leading-order event-by-event EKRT model predictions for the centrality dependence of the charged hadron multiplicity in the pseudorapidity interval $|\eta|\le 0.5$, and for the centrality dependence of the charged hadron flow harmonics $v_n\{2\}$ obtained from 2-particle cumulants, in $\sqrt{s_{NN}}=5.44$ TeV Xe+Xe collisions at the CERN Large Hadron Collider. Our prediction for the 0-5 \% central charged multiplicity is $dN_{\rm ch}/d\eta =1218\pm 46$. We also predict $v_n\{2\}$ in Xe+Xe collisions to increase more slowly from central towards peripheral collisions than those in a Pb+Pb system. We find that at $10 \dots 50$\% centralities $v_2\{2\}$ is smaller and $v_3\{2\}$ is larger than in the Pb+Pb system while $v_4\{2\}$ is of the same magnitude in both systems. We also find that the ratio of flow harmonics in Xe+Xe collisions and in Pb+Pb collisions shows a slight sensitivity to the temperature dependence of the shear-viscosity-to-entropy ratio. As we discuss here, the new nuclear mass-number systematics especially in the flow harmonics serves as a welcome further constraint for describing the space-time evolution of a heavy-ion system and for determining the shear viscosity and other transport properties of strongly interacting matter. Comment: 7 pages, 7 figures, revised version. The predicted flow coefficients vn with deformed Xe, and their ratios to 5.023 TeV Pb+Pb vn's are included as ancillary files |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevC.97.034911 |
| URL الوصول: | http://arxiv.org/abs/1711.09803 |
| رقم الأكسشن: | edsarx.1711.09803 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevC.97.034911 |
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