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Our recently developed 2+1 (boost-invariant) hydrodynamic model has been presented and used to i) describe the soft hadronic data collected in the central region of the relativistic heavy-ion collisions at RHIC and ii) to make predictions…

Nuclear Theory · Physics 2011-02-02 Mikolaj Chojnacki

We propose a method to separate \Delta\eta-dependent and \Delta\eta-independent azimuthal correlations using two- and four-particle cumulants between pseudo-rapidity (\eta) bins in symmetric heavy-ion collisions. The \Delta\eta-independent…

Nuclear Experiment · Physics 2012-10-10 Lingshan Xu , Li Yi , Daniel Kikola , Joshua Konzer , Fuqiang Wang , Wei Xie

Collective flow as a consequence of hydrodynamical evolution in heavy ion collisions is intensively studied by theorists and experimentalists to understand the behavior of hot quark matter. Due to their large mass, heavy ions suffer…

High Energy Physics - Phenomenology · Physics 2010-05-26 Tanguy Pierog , Sarah Porteboeuf , Iurii Karpenko , Klaus Werner

General features of the formalism describing hydrodynamic evolution of transversally thermalized matter possibly produced at the very early stages of ultra-relativistic heavy-ion collisions are presented. Thermodynamical consistency of the…

Nuclear Theory · Physics 2009-10-02 Radoslaw Ryblewski

The results on elliptic flow in sqrt(s)=2.76 TeV Pb+Pb collisions at the Large Hadron Collider (LHC) reported by the ALICE collaboration are remarkably similar to those for sqrt(s)=200 GeV gold-gold collisions at the Relativistic Heavy Ion…

High Energy Physics - Phenomenology · Physics 2011-07-26 Bjoern Schenke , Sangyong Jeon , Charles Gale

We perform 3+1D viscous hydrodynamic calculations of proton-lead and lead-lead collisions at top LHC energy. We show that existing data from high-multiplicity p-Pb events can be well described in hydrodynamics, suggesting that collective…

Nuclear Theory · Physics 2014-05-16 Igor Kozlov , Matthew Luzum , Gabriel Denicol , Sangyong Jeon , Charles Gale

When heavy ions collide at ultra-relativistic energy, thousands of particles are emitted and it is reasonable to attempt to use hydrodynamic descriptions, with suitable initial conditions, to describe the time evolution of the collisons. In…

Nuclear Experiment · Physics 2007-05-23 Michael Murray , BRAHMS Collaboration

We extend the applicability of the hydrodynamics, perturbative QCD and saturation -based EKRT (Eskola-Kajantie-Ruuskanen-Tuominen) framework for ultrarelativistic heavy-ion collisions to peripheral collisions by introducing dynamical…

High Energy Physics - Phenomenology · Physics 2023-07-03 H. Hirvonen , K. J. Eskola , H. Niemi

Effects caused by the event-by-event fluctuation of the initial conditions in hydrodynamical description of high-energy heavy-ion collisions are investigated. Non-negligible effects appear for several observable quantities, even for a fixed…

High Energy Physics - Phenomenology · Physics 2014-11-17 C. E. Aguiar , Y. Hama , T. Kodama , T. Osada

Following the Boz$\dot{\textrm{e}}$k-Wyskiel parametrization tilted initial condition, an alternative way to construct a longitudinal tilted fireball based on the Glauber collision geometry is presented. This longitudinal tilted initial…

High Energy Physics - Phenomenology · Physics 2021-12-22 Ze-Fang Jiang , C. B. Yang , Qi Peng

A large anti-correlation signal between elliptic flow $v_2$ and average transverse momentum $[p_{\mathrm{T}}]$ was recently measured in small collision systems, consistent with a final-state hydrodynamic response to the initial geometry.…

Nuclear Theory · Physics 2022-01-04 Chunjian Zhang , Arabinda Behera , Somadutta Bhatta , Jiangyong Jia

A key ingredient of hydrodynamical modeling of relativistic heavy ion collisions is thermal initial conditions, an input that is the consequence of a pre-thermal dynamics which is not completely understood yet. In the paper we employ a…

Nuclear Theory · Physics 2015-01-22 V. Yu. Naboka , S. V. Akkelin , Iu. A. Karpenko , Yu. M. Sinyukov

Elliptic flow in ultrarelativistic heavy-ion collisions results from the hydrodynamic response to the spatial anisotropy of the initial density profile. A long-standing problem in the interpretation of flow data is that uncertainties in the…

Nuclear Theory · Physics 2015-02-09 Li Yan , Jean-Yves Ollitrault , Arthur M. Poskanzer

In this work we simulate a viscous hydrodynamical model of non-central Au-Au collisions in 2+1 dimensions, assuming longitudinal boost invariance. The model fluid equations were proposed by \"{O}ttinger and Grmela \cite{OG}. Freezeout is…

Nuclear Theory · Physics 2010-04-06 K. Dusling , D. Teaney

The scenario of a collective expansion of matter created in proton-proton (p-p) collisions at the CERN Large Hadron Collider (LHC) is discussed. Assuming a small transverse size and a formation time of 0.1fm/c of the source we observe the…

Nuclear Theory · Physics 2011-03-17 Piotr Bozek

In collisions between heavy nuclei, such as those at the Large Hadron Collider (LHC) at CERN, hydrodynamic models have successfully related measured azimuthal momentum anisotropies to the transverse shape of the collision region. For an…

High Energy Physics - Phenomenology · Physics 2024-09-25 Christian Bierlich , Peter Christiansen , Gösta Gustafson , Leif Lönnblad , Robin Törnkvist , Korinna Zapp

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. The comparable hydrodynamic simulations of…

We present VAH, a (3+1)-dimensional simulation that evolves the far-from-equilibrium quark-gluon plasma produced in ultrarelativistic heavy-ion collisions with anisotropic fluid dynamics. We solve the hydrodynamic equations on an Eulerian…

Nuclear Theory · Physics 2021-07-28 M. McNelis , D. Bazow , U. Heinz

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

The beam energy dependence of the elliptic flow,$v_2$, is studied in mid-central Au+Au collisions in the energy range of $3\leq \sqrt{s_{NN}} \leq 30$ GeV within the microscopic transport model JAM. The results of three different modes of…

Nuclear Theory · Physics 2018-04-04 Yasushi Nara , Harri Niemi , Akira Ohnishi , Jan Steinheimer , Xiaofeng Luo , Horst Stoecker