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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…

Measurements made by the ALICE Collaboration of single- and two-particle distributions in high-energy pp and p-Pb collisions are used to characterize the interactions in small collision systems, tune models of particle production in QCD,…

Nuclear Experiment · Physics 2019-01-04 Alice Ohlson

Measurements of the $p_{\rm T}$-dependent flow vector fluctuations in Pb-Pb collisions at $\sqrt{s_{_{\rm NN}}} = 5.02~\mathrm{TeV}$ using azimuthal correlations with the ALICE experiment at the Large Hadron Collider are presented. A…

Nuclear Experiment · Physics 2024-09-30 ALICE Collaboration

For the first time a principle-component analysis is used to separate out different orthogonal modes of the two-particle correlation matrix from heavy ion collisions. The analysis uses data from sqrt(s[NN]) = 2.76 TeV PbPb and sqrt(s[NN]) =…

Nuclear Experiment · Physics 2017-12-20 CMS Collaboration

Anisotropic flow of hadrons is studied in heavy ion collisions at SPS and RHIC energies within the microscopic quark-gluon string model. The model was found to reproduce correctly many of the flow features, e.g., the wiggle structure of…

High Energy Physics - Phenomenology · Physics 2015-06-25 E. Zabrodin , L. Bravina , C. Fuchs , A. Faessler

We calculate flow observables with the NeXSPheRIO ideal hydrodynamic model and make the first comparison to the complete set of mid-rapidity flow measurements made by the PHENIX collaboration in top energy Au+Au collisions. A simultaneous…

Nuclear Theory · Physics 2015-03-20 Fernando G. Gardim , Frederique Grassi , Matthew Luzum , Jean-Yves Ollitrault

Relativistic hydrodynamics has been extensively applied to high energy heavy-ion collisions. We review hydrodynamic calculations for Au+Au collisions at RHIC energies and provide a comprehensive comparison between the model and experimental…

Nuclear Theory · Physics 2007-05-23 Peter F. Kolb , Ulrich Heinz

In this work, we have shown the two-particle correlations of charged hadrons in d-Au collisions at 200 GeV in PYTHIA8/Angantyr simulations. These correlations were studied at different multiplicities and pseudorapidity intervals. The…

High Energy Physics - Phenomenology · Physics 2026-04-15 Satya Ranjan Nayak , Akash Das , B. K. Singh

Recent analyses of small collision systems, namely $p+p$ and $p+$Pb at the LHC and $p+$Au, $d+$Au and $^{3}$He+Au at RHIC, have revealed azimuthal momentum anisotropies commonly associated with collective flow in larger systems. Viscous…

Nuclear Theory · Physics 2016-05-04 J. D. Orjuela Koop , R. Belmont , P. Yin , J. L. Nagle

We present the results of an elliptic flow analysis of Cu+Cu collisions recorded with the STAR detector at 62.4 and 200GeV. Elliptic flow as a function of transverse momentum is reported for different collision centralities for charged…

Nuclear Experiment · Physics 2010-04-14 The STAR Collaboration , B. I. Abelev

We predict a new effect due to the presence of the global vorticity in non-central relativistic heavy-ion collisions, namely a splitting of the elliptic flow parameter $v_2$ at non-zero rapidity. The size of the splitting is proposed as a…

High Energy Physics - Phenomenology · Physics 2021-10-18 Zhengyu Chen , Zeyan Wang , Carsten Greiner , Zhe Xu

Correlations of two flow harmonics $v_n$ and $v_m$ via three- and four-particle cumulants are measured in 13 TeV $pp$, 5.02 TeV $p$+Pb, and 2.76 TeV peripheral Pb+Pb collisions with the ATLAS detector at the LHC. The goal is to understand…

Nuclear Experiment · Physics 2019-01-14 ATLAS Collaboration

In this talk I present new STAR results on measurements of integrated elliptic flow at midrapidity in Au+Au and Cu+Cu collisions at $\sqrt{s_{NN}}=$200 and 62 GeV energies. These results have been obtained from azimuthal correlations…

Nuclear Experiment · Physics 2009-11-11 Sergei A. Voloshin

Within a (3+1)D viscous hydrodynamic model we compute anisotropic flow in small system collisions as performed at the Relativistic Heavy Ion Collider and measured by the STAR and PHENIX Collaborations. We emphasize the importance of the…

Nuclear Theory · Physics 2023-12-21 Sangwook Ryu , Bjoern Schenke , Chun Shen , Wenbin Zhao

In this study, we use the maximum likelihood estimator (MLE) to explore factorization and event-plane correlations in relativistic heavy-ion collisions. Our analyses incorporate both numerical simulations and publicly available data from…

As flow estimators, multi-particle correlators, particularly the higher-order ones, are generally regarded as effective tools for suppressing non-flow contributions. In this work, however, using two well-known toy models that simulate…

Nuclear Theory · Physics 2026-04-30 Chong Ye , Wei-Liang Qian , Yue Cui , Dan Wen , Yutao Xing , Rui-Hong Yue , Takeshi Kodama

The hydrodynamic (hydro) model applied to heavy ion data from the relativistic heavy ion collider (RHIC) in the form of single-particle spectra and correlations seems to indicate that a dense QCD medium nearly opaque to partons, a…

High Energy Physics - Phenomenology · Physics 2014-11-20 Thomas A. Trainor

A series of new flow observables mixed harmonic multi-particle cumulants (MHC), which allow for the first time to quantify the correlations strength between different order of flow coefficients with various moments, was investigated using…

Nuclear Theory · Physics 2021-08-11 Ming Li , You Zhou , Wenbin Zhao , Baochi Fu , Yawen Mou , Huichao Song

Anisotropic flow measurements in heavy-ion collisions provide important information on the properties of hot and dense matter. These measurements are based on analysis of azimuthal correlations and might be biased by contributions from…

Nuclear Experiment · Physics 2011-10-18 Ante Bilandzic , Raimond Snellings , Sergei Voloshin

Elliptic flow ($v_2$) measurements of inclusive charged hadrons at mid-rapidity ($|\eta| <$ 1.0) in Au+Au collisions at $E_{lab} = 35\mathrm{~A~GeV}$ using the Parton Hadron String Dynamics (PHSD) model are presented as a function of…

Nuclear Experiment · Physics 2023-02-24 Waseem Bhat , M. Farooq Mir , Vipul Bairathi , Towseef Bhat , Sonia Kabana , Shabir Bhat