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In ultra-central heavy-ion collisions, anisotropic hydrodynamic flow is generated by density fluctuations in the initial state rather than by geometric overlap effects. For a given centrality class, the initial fluctuation spectrum is…

Nuclear Theory · Physics 2015-07-15 Chun Shen , Zhi Qiu , Ulrich Heinz

The scaling properties of elliptic flow of hadrons produced in ultrarelativistic heavy-ion collisions are investigated at low transverse momenta, $p_T\lsim 2$\,GeV. Utilizing empirical parameterizations of a thermalized fireball with…

Nuclear Theory · Physics 2014-11-21 Min He , Rainer J. Fries , Ralf Rapp

The measurement of elliptic flow for charged particles in Au-Au collisions at $\sqrt{s_{_{NN}}} = 130$ GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC) is presented. Charge particle distributions over a wide…

Nuclear Experiment · Physics 2010-05-28 Inkyu Park , The PHOBOS Collaboration

The collective expansion of matter created in collisions of heavy-ions, ranging from collision energies of tens of MeV to a few TeV per nucleon pair, proved to be one of the best probes to study the detailed properties of these unknown…

Nuclear Experiment · Physics 2015-06-22 Raimond Snellings

Anisotropic flow is accredited to have effects from the initial state geometry and fluctuations in the nuclear overlap region. The elliptic flow ($v_2$) and triangular flow ($v_3$) coefficients of the final state particles are expected to…

High Energy Physics - Phenomenology · Physics 2023-04-13 Suraj Prasad , Neelkamal Mallick , Sushanta Tripathy , Raghunath Sahoo

We investigate how the initial geometry of a heavy-ion collision is transformed into final flow observables by solving event-by-event ideal hydrodynamics with realistic fluctuating initial conditions. We study quantitatively to what extent…

Nuclear Theory · Physics 2012-03-06 Fernando G. Gardim , Frederique Grassi , Matthew Luzum , Jean-Yves Ollitrault

We calculate the off--center observational relations in a spherically symmetric dust universe that is inhomogeneous at small redshifts. In contrast to the usual model, in which the CMBR dipole is interpreted as a Doppler effect due to…

Astrophysics · Physics 2009-10-28 Neil Humphreys , Roy Maartens , David Matravers

We report results from a multiphase transport (AMPT) model on the rapidity and system size dependence of charged hadron anisotropic flows in nuclear collisions at the Relativistic Heavy Ion Collider (RHIC).

Nuclear Theory · Physics 2009-11-11 Che Ming Ko , Lie-Wen Chen

We here present the results of elliptical flow for the collision of different asymmetric nuclei (10Ne20 +13 Al27, 18Ar40 +21 Sc45, 30Zn64 +28 Ni58, 36Kr86 +41 Nb93) by using the Quantum Molecular Dynamics (QMD) model. General features of…

Nuclear Theory · Physics 2017-07-26 Varinderjit Kaur , Suneel Kumar

We propose Elliptic Power and Power parameterizations for the probability distribution of initial state anisotropies in heavy-ion collisions. By assuming a linear eccentricity scaling, the new parameterizations can also be applied to…

Nuclear Theory · Physics 2015-03-04 Li Yan , Jean-Yves Ollitrault , Art M. Poskanzer

A study of collective behavior in heavy ion collisions provides one of the most sensitive and promising probes for investigation of possible formation of new extreme state of strong interacting matter and elucidating its properties.…

Nuclear Experiment · Physics 2008-09-19 V. A. Okorokov

We report the measurements of correlations between event-by-event fluctuations of amplitudes of anisotropic flow harmonics in nucleus-nucleus collisions, obtained for the first time using a new analysis method based on multiparticle…

Nuclear Experiment · Physics 2016-11-29 ALICE Collaboration

We first review previous work on anisotropic flow at the AGS and SPS. Then the physics related to flow is discussed as well as the interaction of flow with other non-flow measurements. From 40k RQMD and 100k HIJING events predictions for…

Nuclear Experiment · Physics 2007-05-23 R. J. M. Snellings , A. M. Poskanzer , S. A. Voloshin

Weak gravitational lensing of the CMBR manifests as a secondary anisotropy in the temperature maps. The effect, quantified through the shear and convergence fields imprint the underlying large scale structure (LSS), geometry and evolution…

Cosmology and Nongalactic Astrophysics · Physics 2010-03-19 Tapomoy Guha Sarkar

We present the elliptic flow $v_{2}$ of electrons from the semi-leptonic decays of heavy-flavour hadrons at mid-rapidity for semi-central ($20-40%$ centrality) Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 2.76 TeV measured with the ALICE…

High Energy Physics - Experiment · Physics 2019-08-13 Andrea Dubla

In this work we study the connection between anisotropic flows and lumpy initial conditions for Au+Au collisions at 200GeV. We present comparisons between anisotropic flow coefficients and eccentricities up to sixth order, and between…

Nuclear Theory · Physics 2015-05-30 Fernando G. Gardim , Yogiro Hama , Frederique Grassi

The pseudorapidity dependence of elliptic ($v_2$), triangular ($v_3$), and quadrangular ($v_4$) flow coefficients of charged particles measured in Pb-Pb collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_{\rm NN}}=5.02$ TeV…

Nuclear Experiment · Physics 2024-04-15 ALICE Collaboration

Strange hadrons, especially multi-strange hadrons are good probes for the early partonic stage of heavy ion collisions due to their small hadronic cross sections. In this paper, I give a brief review on the elliptic flow measurements of…

Nuclear Experiment · Physics 2016-09-21 Shusu Shi

Many observables which are used as a signature of the collective effects in heavy-ion collisions when measured in high multiplicity pp and pA interactions reveal a very similar behaviour. We will present first measurements of different…

Nuclear Experiment · Physics 2019-02-07 Katarína Gajdošová

The large statistics accumulated during the LHC Run-1 and Run-2 have provided the unique opportunity to study the properties of the Quark-Gluon Plasma using rare hard probes. The ALICE Collaboration has presented new results on the jet…

Nuclear Experiment · Physics 2019-08-13 Salvatore Aiola
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