Dihadron angular correlations in PbPb collisions with HYDJET++ model.

20 May 2014, 16:30
2h
spectrum (darmstadtium)

spectrum

darmstadtium

Board: I-11
Poster Correlations and Fluctuations Poster session

Speaker

Gyulnara Eyyubova (Czech Technical University in Prague, FNSPE, Prague, Czech Republic)

Description

The hybrid model HYDJET++, including soft and hard physics, is employed for the analysis of azimuthal anisotropy harmonics and dihadron angular correlations measured in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV. The soft part of the model represents a thermal hadron production at the freeze-out hypersurface in accordance with hydrodynamical calculations. The possible triangular shape fluctuation of the initial overlap density of the colliding nuclei was implemented in HYDJET++ by the modulation of the final freeze-out hypersurface with the appropriate triangular coefficient, which results in triangular flow $v_3$. Along with elliptic flow $v_2$, it generates higher order flow coefficients, as well as a specific structure of dihadron angular correlations on relative azimuthal angle in a broad range of relative pseudoraidities ($\Delta\varphi \Delta\eta$). The comparison of model results with the LHC data on short- and long-range angular correlations is presented for different collisions centralities and transverse momenta intervals.
On behalf of collaboration: None

Primary author

Gyulnara Eyyubova (Czech Technical University in Prague, FNSPE, Prague, Czech Republic)

Co-authors

Alexandre Snigirev (M.V. Lomonosov Moscow State University (RU)) Evgeny Zabrodin (EPF group-Department of Physics-University of Oslo) Igor Lokhtin (M.V. Lomonosov Moscow State University (RU)) Larisa Bravina (University of Oslo (NO)) Dr Ludmila Malinina (SINP MSU) Serguei Petrushanko (M.V. Lomonosov Moscow State University (RU)) Prof. Vladimir Korotkikh (M.V. Lomonosov Moscow State University (RU))

Presentation Materials