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The elliptic flow parameter (component), $v_2$, in the Fourier expansion of event-by-event charged particle multiplicity azimuthal distribution in the momentum space is studied by taking into account the multiplicity fluctuations. The…

High Energy Physics - Phenomenology · Physics 2009-12-23 Dai-Mei Zhou , Yun Cheng , Yu-Liang Yan , Bao-Guo Dong , Ben-Hao Sa , Laszlo P. Csernai

The viscous correction to thermal photon production at leading log order is calculated and integrated over the space-time evolution of a hydrodynamic simulation of heavy-ion collisions. The resulting transverse momentum spectra and elliptic…

Nuclear Theory · Physics 2010-05-25 Kevin Dusling

Event-by-event fluctuations of initial QCD-matter density produced in heavy-ion collisions at RHIC enhance the production of thermal photons significantly in the region $2 \le p_T \le 4$ GeV/$c$ compared to a smooth initial-state averaged…

High Energy Physics - Phenomenology · Physics 2015-05-28 Rupa Chatterjee , Hannu Holopainen , Thorsten Renk , Kari J. Eskola

Elliptic flow in heavy-ion collisions at incident energies $E_{lab}\simeq$ (1--160)A GeV is analyzed within the model of 3-fluid dynamics (3FD). We show that a simple correction factor, taking into account dissipative affects, allows us to…

Nuclear Theory · Physics 2009-12-30 Yu. B. Ivanov , I. N. Mishustin , V. N. Russkikh , L. M. Satarov

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

High Energy Physics - Phenomenology · Physics 2017-04-18 Ioannis Iatrakis , Elias Kiritsis , Chun Shen , Di-Lun Yang

We investigate the transverse momentum spectra of identified particles at 7 TeV and 13 TeV in pp collisions in the framework of the blast wave model with Tsallis statistics (TBW). Based on experimental data by ALICE Collaboration, we…

High Energy Physics - Phenomenology · Physics 2024-06-10 Muhammad Waqas , Wolfgang Bietenholz , Mohamed Bouzidi , Muhammad Ajaz , Abd Al Karim Haj Ismail , Taoufik Saidani

We compute the elliptic flow $v_2$ of thermal photons in a strongly coupled plasma with constant magnetic field via gauge/gravity duality. The D3/D7 embedding is applied to generate the contributions from massive quarks. By considering the…

High Energy Physics - Theory · Physics 2014-02-04 Berndt Muller , Shang-Yu Wu , Di-Lun Yang

We present a differential measurement of the azimuthal anisotropy of charged hadron production in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=2.76 TeV. This azimuthal anisotropy is expanded into a Fourier series in azimuthal angle, where…

Nuclear Experiment · Physics 2019-08-13 Jiangyong Jia

The elliptic flow parameter ($v_2$) for $K_S^0$ and $\Lambda+\bar{\Lambda}$ has been measured at mid-rapidity in Au + Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV by the STAR collaboration. The $v_2$ values for both $K_S^{0}$ and…

Nuclear Experiment · Physics 2009-11-10 Paul Sorensen

Recent data from p+p and p+Pb collisions at the Large Hadron Collider (LHC), and d+Au and $^3$He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) reveal patterns that---when observed in the collision of heavy nuclei---are…

Nuclear Experiment · Physics 2015-11-11 J. D. Orjuela Koop , A. Adare , D. McGlinchey , J. L. Nagle

The elliptic flow of Lambda hyperons has been measured by the NA49 collaboration at the CERN-SPS in semi-central Pb+Pb collisions at 158A GeV. The standard method of correlating particles with the event plane was used. Measurements of v2…

Nuclear Experiment · Physics 2019-08-14 G. Stefanek

In order to study further the long-range correlations ("ridge") observed recently in p+Pb collisions at sqrt(s_NN) =5.02 TeV, the second-order azimuthal anisotropy parameter of charged particles, v_2, has been measured with the cumulant…

High Energy Physics - Experiment · Physics 2014-05-08 ATLAS Collaboration

In the framework of the Glauber model as implemented in GLISSANDO 2, we study the fluctuations of flow harmonics in Pb+Pb collisions at the LHC centre-of-mass energy of 2.76 TeV. The model with wounded nucleons and the admixture of binary…

Nuclear Theory · Physics 2016-05-25 Maciej Rybczynski , Wojciech Broniowski

The measurement of azimuthal correlations of charged particles is presented for Pb-Pb collisions at $\sqrt{s_{\rm NN}}=$ 2.76 TeV and p-Pb collisions at $\sqrt{s_{\rm NN}}=$ 5.02 TeV with the ALICE detector at the CERN Large Hadron…

Nuclear Experiment · Physics 2017-12-27 ALICE Collaboration

Anisotropic flow is sensitive to the shear $(\eta/s)$ and bulk ($\zeta/s$) viscosity of the quark-gluon plasma created in heavy-ion collisions, as well as the initial state of such collisions and hadronization mechanisms. In these…

Nuclear Experiment · Physics 2018-03-14 Redmer Alexander Bertens

The rapidity distribution of thermal photons produced in Pb+Pb collisions at CERN-SPS energies is calculated within scaling and three-fluid hydrodynamics. It is shown that these scenarios lead to very different rapidity spectra. A…

High Energy Physics - Phenomenology · Physics 2015-06-25 A. Dumitru , U. Katscher , J. A. Maruhn , H. Stöcker , W. Greiner , D. H. Rischke

The integrated HydroKinetic Model (iHKM) is applied to analyse the results of direct photon spectra as well as elliptic and triangular flow measurements in 200A GeV Au+Au collisions at RHIC for different centrality bins. Experiments detect…

Nuclear Theory · Physics 2020-06-30 V. Yu. Naboka , Yu. M. Sinyukov , G. M. Zinovjev

We investigate the elliptic and the triangular flow of heavy mesons in ultrarelativistic heavy-ion collisions at RHIC and the LHC. The dynamics of heavy quarks is coupled to the locally thermalized and fluid dynamically evolving quark-gluon…

High Energy Physics - Phenomenology · Physics 2015-06-23 Marlene Nahrgang , Jörg Aichelin , Steffen Bass , Pol Bernard Gossiaux , Klaus Werner

We report the measurements of elliptic flow $v_{2}$, as well as higher harmonics triangular flow $v_{3}$ and quadrangular flow $v_{4}$, in $\sqrt{s_{_{NN}}} =$ 2.76 TeV Pb--Pb collisions, measured with the ALICE detector. We show that the…

Nuclear Experiment · Physics 2019-08-13 You Zhou

High $p_T > 10$ GeV elliptic flow, which is experimentally measured via the correlation between soft and hard hadrons, receives competing contributions from event-by-event fluctuations of the low $p_T$ elliptic flow and event plane angle…

Nuclear Theory · Physics 2016-06-29 Jacquelyn Noronha-Hostler , Barbara Betz , Jorge Noronha , Miklos Gyulassy