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Recent studies reveal that at high energies, collisions of small system like $p+p$ gives signatures similar to that widely observed in heavy ion collisions hinting towards a possibility of forming a medium with collective behaviour. With…

High Energy Physics - Phenomenology · Physics 2020-01-15 Suman Deb , Golam Sarwar , Dhananjaya Thakur , Pavish S. , Raghunath Sahoo , Jan-e Alam

I review recent developments in the field of relativistic hydrodynamics and its application to the bulk dynamics in heavy-ion collisions at the Relativistic Heavy- Ion Collider (RHIC) and the Large Hadron Collider (LHC). In particular, I…

Nuclear Theory · Physics 2015-05-28 Bjoern Schenke

We apply a recent and simple technique which speeds up the calculation of localized collisions in holography to study more realistic models of heavy ion collisions via the gauge/gravity duality. The initial data takes into account the lumpy…

High Energy Physics - Theory · Physics 2023-04-12 Sebastian Waeber , Laurence G. Yaffe

The transverse-momentum integrated elliptic flow of charged particles at midrapidity, $v_2$(charged), and that of identified hadrons from Au+Au collisions are computed in a wide range of incident energies 2.7 GeV $\le \sqrt{s_{NN}}\le$ 39…

Nuclear Theory · Physics 2015-03-05 Yu. B. Ivanov , A. A. Soldatov

We present a quantitative study of vorticity formation in peripheral ultrarelativistic heavy ion collisions at sqrt(s)NN = 200 GeV by using the ECHO-QGP numerical code, implementing relativistic dissipative hydrodynamics in the causal…

Centrality dependence of charged particles multiplicity, transverse momentum spectra, integrated and differential elliptic flow, in $\sqrt{s}_{NN}$=200 GeV Au+Au collisions are analyzed using event by event ideal hydrodynamics. Monte-Carlo…

Nuclear Theory · Physics 2013-04-03 A. K. Chaudhuri , Md. Rihan Haque , Victor Roy , Bedangadas Mohanty

Simulated results from a 2+1D relativistic viscous hydrodynamic model have been compared to the experimental data on the centrality dependence of invariant yield, elliptic flow ($v_{2}$), and hexadecapole flow ($v_{4}$) as a function of…

Nuclear Theory · Physics 2013-04-30 Victor Roy , A. K. Chaudhuri , Bedangadas Mohanty

Employing a perturbative QCD based parton cascade we calculate the elliptic flow $v_2$ and its transverse momentum dependence $v_2(p_T)$ for the gluon matter created in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV. To make comparisons with…

High Energy Physics - Phenomenology · Physics 2009-02-18 Zhe Xu , Carsten Greiner

The dynamical development of collective flow is studied in a (3+1)D fluid dynamical model, with globally symmetric, peripheral initial conditions, which take into account the shear flow caused by the forward motion on the projectile side…

Nuclear Theory · Physics 2012-05-02 L. P. Csernai , D. D. Strottman , Cs. Anderlik

A phenomenological analysis of the experimental measurements of transverse momentum spectra of identified charged hadrons and strange hyperons in Pb-Pb and Xe-Xe collisions at the LHC is presented. The analysis is based on the relativistic…

High Energy Physics - Phenomenology · Physics 2023-12-21 L. Vermunt , Y. Seemann , A. Dubla , S. Floerchinger , E. Grossi , A. Kirchner , S. Masciocchi , I. Selyuzhenkov

Results from the RHIC and LHC experiments show, that in relativistic heavy ion collisions, a new state of matter, a strongly interacting perfect fluid is created. Accelerating, exact and explicit solutions of relativistic hydrodynamics…

High Energy Physics - Phenomenology · Physics 2017-02-14 Mate Csanad , Tamas Csorgo , Ze-Fang Jiang , Chun-Bin Yan

The baryon and energy densities attained in fragmentation regions in central Au+Au collisions in the energy range of the Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider (RHIC) are estimated within the model of the…

Nuclear Theory · Physics 2018-07-25 Yu. B. Ivanov , A. A. Soldatov

The early stages of a relativistic heavy-ion collision are examined in the framework of an effective classical SU(3) Yang-Mills theory in the transverse plane. We compute the initial energy and number distributions, per unit rapidity, at…

High Energy Physics - Phenomenology · Physics 2009-11-07 Alex Krasnitz , Yasushi Nara , Raju Venugopalan

I develop and apply a Bayesian method for quantitatively estimating properties of the quark-gluon plasma (QGP), an extremely hot and dense state of fluid-like matter created in relativistic heavy-ion collisions. The QGP cannot be directly…

Nuclear Theory · Physics 2018-04-19 Jonah E. Bernhard

We study the properties of the strongly-coupled quark-gluon plasma with a multistage model of heavy ion collisions that combines the T$_\mathrm{R}$ENTo initial condition ansatz, free-streaming, viscous relativistic hydrodynamics, and a…

We investigate the possibility of selecting heavy ion collision events with certain features in the initial state ("event engineering"). Anisotropic flow measurements in heavy ion reactions have confirmed the almost ideal fluid dynamical…

Nuclear Theory · Physics 2013-11-13 Hannah Petersen , Berndt Muller

Relativistic heavy ion collisions have reached energies that enable the creation of a novel state of matter termed the quark-gluon plasma. Many observables point to a picture of the medium as rapidly equilibrating and expanding as a nearly…

Nuclear Theory · Physics 2011-07-19 James L. Nagle , Ian G. Bearden , William A. Zajc

We investigate the rapidity dependence of the elliptical flow in heavy ion collisions at 200 GeV (cms), by employing a three-dimensional hydrodynamic evolution, based on different initial conditions, and different freeze-out scenarios. It…

Nuclear Theory · Physics 2015-05-13 K. Werner , T. Hirano , Iu. Karpenko , T. Pierog , S. Porteboeuf , M. Bleicher , S. Haussler

Fluctuations in the initial conditions for relativistic heavy ion collisions are proving to be crucial to understanding final state flow and jet quenching observables. The initial geometry has been parametrized in terms of moments in the…

Nuclear Experiment · Physics 2011-05-05 James L. Nagle , Michael P. McCumber

Partonic matter produced in the early stage of ultrarelativistic nucleus-nucleus collisions is assumed to be composed mainly of gluons, and quarks and antiquarks are produced at later times. To study the implications of such a scenario, the…