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Using viscous relativistic hydrodynamics we show that systematic studies of the impact parameter dependence of the eccentricity scaled elliptic flow can distinguish between different models for the calculation of the initial source…

Nuclear Theory · Physics 2009-12-30 Ulrich W. Heinz , J. Scott Moreland , Huichao Song

Anisotropic flow can offer significant information of evolution dynamics in heavy-ion collisions. A systematic study of the directed flow $v_1$ and elliptic flow $v_2$ of hard photons and free nucleons is performed for $^{40}$Ca+$^{40}$Ca…

Nuclear Theory · Physics 2020-10-13 S. S. Wang , Y. G. Ma , X. G. Cao , D. Q. Fang , C. W. Ma

Elliptic flow and HBT are studied for non-central relativistic nuclear collisions. Azimuthal asymmetries show up in both elliptic flow and HBT radii and are calculated in both collisionless and hydrodynamic limits relevant for peripheral…

Nuclear Theory · Physics 2009-07-09 H. Heiselberg , A. Levy

The results from the STAR Collaboration on directed flow (v_1), elliptic flow (v_2), and the fourth harmonic (v_4) in the anisotropic azimuthal distribution of particles from Au+Au collisions at sqrtsNN = 200 GeV are summarized and compared…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration

This contribution presents a theoretical overview of hydrodynamic modelling of heavy-ion collisions, with highlights on some recent developments. In particular, the formulation of anisotropic hydrodynamics, the role of hydrodynamic…

Nuclear Theory · Physics 2018-03-14 Li Yan

We report the elliptic flow of charged and identified particles at mid-rapidity in Au+Au collisions at $\sqrt{s_{_{NN}}}=130$ GeV using the STAR TPC at RHIC. The integrated elliptic flow signal, $v_2$, for charged particles reaches values…

Nuclear Experiment · Physics 2014-11-18 R. J. M. Snellings , the STAR Collaboration

Azimuthal and polar angle distributions of particles produced in heavy ion collisions carry important information about the early state of the system and the evolution of the Quark Gluon Plasma. The pixelization code HEALPix was created by…

Nuclear Theory · Physics 2021-12-24 Hannah Anderson , Shengquan Tuo

We use a simple a transverse radial boost scenario coupled to PYTHIA events to illustrate the impact radial flow may have on two- and three-particle correlation functions measured in heavy-ion collisions. We show that modest radial…

Nuclear Experiment · Physics 2008-11-26 Claude A. Pruneau , Sean Gavin , Sergei A. Voloshin

We investigate the contributions from the so-called elliptic gluon Wigner distributions to the rapidity and azimuthal correlations of particles produced in high energy $pA$ collisions by applying the double parton scattering mechanism. We…

High Energy Physics - Phenomenology · Physics 2017-06-14 Yoshikazu Hagiwara , Yoshitaka Hatta , Bo-Wen Xiao , Feng Yuan

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

We developed a deep learning feed-forward network for estimating elliptic flow ($v_2$) coefficients in heavy-ion collisions from RHIC to LHC energies. The success of our model is mainly the estimation of $v_2$ from final state particle…

High Energy Physics - Phenomenology · Physics 2024-10-01 Gergely Gábor Barnaföldi , Neelkamal Mallick , Suraj Prasad , Raghunath Sahoo , Aditya Nath Mishra

New measurements of two- and four-particle elliptic flow are used to investigate flow fluctuations in collisions of U+U at $\sqrt{s_{NN}}$ = 193~GeV, Cu+Au at $\sqrt{s_{NN}}$ = 200~GeV and Au+Au at several beam energies. These measurements…

Nuclear Experiment · Physics 2019-02-20 Niseem Magdy

Collective flow reflects the dynamical evolution in high-energy heavy ion collisions. In particular, the elliptic flow reflects early collision dynamics.We present a systematic analysis of elliptic flow ($v_{2}$) for identified particles…

Nuclear Experiment · Physics 2019-08-13 Shusu Shi

The measurements of flow harmonics $v_2$-$v_6$ using the event plane and two particle correlations methods in broad $p_T$, $\eta$ and centrality ranges using the ATLAS detector at LHC are presented. ATLAS recorded about 9 $\mu…

Nuclear Experiment · Physics 2019-08-14 Soumya Mohapatra

Differential studies of elliptic flow are one of the most powerful tools in studying the initial conditions and dynamical evolution of heavy ion collisions. The comparison of data from Cu+Cu and Au+Au collisions taken with the PHOBOS…

Nuclear Experiment · Physics 2019-08-14 Constantin Loizides

The cumulant method is applied to study elliptic flow ($v_2$) in Au+Au collisions at $\sqrt{s}=200$AGeV, with the UrQMD model. In this approach, the true event plane is known and both the non-flow effects and event-by-event spatial…

Nuclear Theory · Physics 2009-11-11 Xianglei Zhu , Marcus Bleicher , Horst Stoecker

The dilepton radial flow in Au+Au collisions at \sqrt{s_{NN}}=200 GeV is investigated. The space-time evolution of the fireball is described by a 2+1 dimensional ideal hydrodynamics with a variety of equations of state. The slope parameters…

Nuclear Theory · Physics 2011-09-12 Jian Deng , Qun Wang , Nu Xu , Pengfei Zhuang

The principal component analysis of flow correlations in heavy-ion collisions is studied. The correlation matrix of harmonic flow is generalized to correlations involving several different flow vectors. The method can be applied to study…

Nuclear Theory · Physics 2018-03-14 Piotr Bozek

The goal of the Multi-Purpose Detector (MPD) experiment at NICA collider is to explore the QCD phase diagram of strongly interacting matter produced in nucleus-nucleus collisions at $\sqrt{s_{NN}}=4-11$ GeV. The performance of MPD detector…

Nuclear Experiment · Physics 2022-09-21 Vinh Ba Luong , Dim Idrisov , Petr Parfenov , Arkadiy Taranenko , Alexander Demanov

The azimuthal anisotropy of jet spectra due to energy loss of jet partons in azimuthally non-symmetric volume of dense quark-gluon matter is considered for semi-central nuclear interactions at collider energies. We develop the techniques…

High Energy Physics - Phenomenology · Physics 2016-09-06 I. P. Lokhtin , L. I. Sarycheva , A. M. Snigirev
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