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相关论文: Angular Power Spectrum and Elliptic Flow from Even…

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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…

高能物理 - 唯象学 · 物理学 2024-10-01 Gergely Gábor Barnaföldi , Neelkamal Mallick , Suraj Prasad , Raghunath Sahoo , Aditya Nath Mishra

Electromagnetic probes such as direct photons and dileptons are crucial to study the properties of a Quark-Gluon Plasma (QGP) created in heavy ion collisions. Based on the (3+1)-dimensional event-by-event viscous hydrodynamic model EPOS…

高能物理 - 唯象学 · 物理学 2016-07-12 Sheng-Xu Liu , Fu-Ming Liu , Klaus Werner , Meng Yue

A rotationally-symmetrical ellipsoidal flow model is proposed for the relativistic heavy-ion collisions and compared with the 14.6 A GeV/c Si-Al and 10.8 A GeV/c Au-Au collision data. The large stopping in the heavier collision system and…

高能物理 - 唯象学 · 物理学 2007-05-23 Feng Shengqin , Liu Feng , Liu Lianshou

The elliptic flow splitting between particles and their antiparticles has recently been observed by the STAR Collaboration in the beam-energy scan program at the Relativistic Heavy Ion Collider. In studies based on transport models, we have…

核理论 · 物理学 2016-10-12 Jun Xu , Che Ming Ko , Feng Li , Taesoo Song , He Liu

We interpret the scaling of the corrected elliptic flow parameter w.r.t. the corrected multiplicity, observed to hold in heavy ion collisions for a wide variety of energies and system sizes. We use dimensional analysis and power-counting…

核理论 · 物理学 2008-11-26 Giorgio Torrieri

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…

核理论 · 物理学 2014-11-21 Min He , Rainer J. Fries , Ralf Rapp

We investigated the information carried by the data of direct photons, ie, the transverse momentum spectrum and the elliptic flow $v_{2}$ from Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76TeV measured at Large Hadron Collider (LHC) and from…

核理论 · 物理学 2014-03-19 Fu-Ming Liu , Sheng-Xu Liu

We present a new method for analyzing directed and elliptic flow in heavy ion collisions. Unlike standard methods, it separates the contribution of flow to azimuthal correlations from contributions due to other effects. The separation…

核理论 · 物理学 2008-11-26 Nicolas Borghini , Phuong Mai Dinh , Jean-Yves Ollitrault

New X-ray observatories (Chandra and XMM-Newton) are providing a wealth of high-resolution X-ray spectra in which hydrogen- and helium-like ions are usually strong features. We present results from a new collisional-radiative plasma code,…

天体物理学 · 物理学 2009-11-06 Randall K. Smith , Nancy S. Brickhouse , Duane A. Liedahl , John C. Raymond

Anisotropic flow is a sensitive probe of the initial conditions and the transport properties of the Quark Gluon Plasma (QGP) produced in heavy-ion collisions. In these proceedings, we present the first results of elliptic ($v_2$),…

核实验 · 物理学 2019-08-13 You Zhou

We use an event-by-event hydrodynamical description of the heavy-ion collision process with Glauber initial conditions to calculate the thermal emission of photons. The photon rates in the hadronic phase follow from a spectral function…

核理论 · 物理学 2017-07-26 Young-Min Kim , Chang-Hwan Lee , Derek Teaney , Ismail Zahed

Elliptic flow has been one of the key observables for establishing the finding of the quark-gluon plasma (QGP) at the highest energies of Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC). As a sign of collectively…

核理论 · 物理学 2015-06-17 Jussi Auvinen , Hannah Petersen

The major goal of high-energy heavy-ion collisions is to study the properties of the deconfined quark gluon plasma (QGP), such as partonic collectivity. The collective motion of constituent quarks can be derived from the anisotropic flow…

核实验 · 物理学 2020-12-02 Amir Goudarzi , Gang Wang , Huan Zhong Huang

Using ideal relativistic hydrodynamics in 2+1 dimensions, we study the collision energy dependence of radial and elliptic flow, of the emitted hadron spectra, and of the transverse momentum dependence of several hadronic particle ratios,…

核理论 · 物理学 2009-07-22 Gregory Kestin , Ulrich W Heinz

We have obtained a new set of parameters in a multiphase transport (AMPT) model that are able to describe both the charged particle multiplicity density and elliptic flow measured in Au+Au collisions at center of mass energy…

核理论 · 物理学 2011-07-21 Jun Xu , Che Ming Ko

We study the particles emitted in the fireball following a Relativistic Heavy Ion Collision with the traditional angular analysis employed in cosmology and earth sciences, producing Mollweide plots of the p_t distribution of a few actual,…

高能物理 - 唯象学 · 物理学 2016-12-16 Felipe J. Llanes-Estrada , Jose L. Muñoz Martinez

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|$\eta$|<0.8)…

核实验 · 物理学 2017-10-02 ALICE Collaboration

Elliptic flow holds much promise for studying the early-time thermalization attained in ultrarelativistic nuclear collisions. Flow measurements also provide a means of distinguishing between hydrodynamic models and calculations which…

核实验 · 物理学 2012-08-27 STAR collaboration

In many simulations of high-energy heavy-ion collisions on an event-by-event analysis, it is known that the initial energy density distribution in the transverse plane is highly fluctuating. Subsequent longitudinal expansion will lead to…

高能物理 - 唯象学 · 物理学 2009-11-11 Wei-Ning Zhang , Yan-Yu Ren , Cheuk-Yin Wong

The thermal-photon emission from strongly coupled gauge theories at finite temperature is calculated by using holographic models for QCD in the Veneziano limit (V-QCD). These emission rates are then embedded in hydrodynamic simulations…

高能物理 - 唯象学 · 物理学 2017-04-05 Ioannis Iatrakis , Elias Kiritsis , Chun Shen , Di-Lun Yang