HYDRO + JETS (HYDJET++) event generator for Pb+Pb collisions at LHC
| Autor: | Bravina, L., Johansson, B. H. Brusheim, Crkovská, J., Eyyubova, G., Korotkikh, V., Lokhtin, I., Malinina, L., Nazarova, E., Petrushanko, S., Snigirev, A., Zabrodin, E. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series 736 (2016) 012024 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1742-6596/736/1/012024 |
| Popis: | The Monte Carlo event generator HYDJET++ is one of the few generators, designed for the calculations of heavy-ion collisions at ultrarelativistic energies, which combine treatment of soft hydro-like processes with the description of jets traversing the hot and dense partonic medium. The model is employed to study the azimuthal anisotropy phenomena, dihadron angular correlations and event-by-event (EbyE) fluctuations of the anisotropic flow in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV. The interplay of soft and hard processes describes the violation of the mass hierarchy of meson and baryon elliptic and triangular flows at p_T > 2 GeV/c, the fall-off of the flow harmonics at intermediate transverse momenta, and the worsening of the number-of-constituent-quark (NCQ) scaling of elliptic/triangular flow at LHC compared to RHIC energies. The cross-talk of v_2 and v_3 leads to emergence of higher order harmonics in the model and to appearance of the ridge structure in dihadron angular correlations in a broad pseudorapidity range. HYDJET++ possesses also the dynamical EbyE fluctuations of the anisotropic flow. The model results agree well with the experimental data. Comment: 8 pages, 6 figures, contribution to Proceedings of the Winter Workshop on Nuclear Dynamics 2016 |
| Databáze: | arXiv |
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