Resonance decay contributions to higher-order anisotropic flow coefficients

Qiu, Zhi; Shen, Chun; Heinz, Ulrich

doi:10.1103/physrevc.86.064906

Cited by 81 publications

(130 citation statements)

References 79 publications

(46 reference statements)

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“…In this work, we utilize the code version and parameter values provided by Ref. [11]. The hydrodynamic simulation generates the space-time evolution of the local temperature and flow velocity profiles of the QGP fireball created in relativistic nuclear collisions.…”

Section: B Heavy Quark Evolution In a Realistic Mediummentioning

confidence: 99%

“…g q,g V e pq,g ·u/Tc ± 1 , (11) in which u is the 4-velocity of the fluid cell. This effective temperature T eff is then utilized in the thermal distributions of light partons and the coalescence probability inside a moving fluid cell is calculated according to Eqs.…”

Section: A a Hybrid Model Of Fragmentation And Coalescencementioning

confidence: 99%

“…This highly excited state of matter is composed of color de-confined quarks and gluons, and displays properties of a nearly perfect fluid such as the strong collective flow observed for the produced hadrons [3][4][5]. Relativistic hydrodynamic models successfully describe the space-time evolution of the strongly coupled QGP fireballs [6][7][8][9][10][11][12][13], from which it is found that the value of the shear viscosity to entropy density ratio η/s of the produced QGP is small.…”

Section: Introductionmentioning

confidence: 99%

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Energy loss, hadronization, and hadronic interactions of heavy flavors in relativistic heavy-ion collisions

2015

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We construct a theoretical framework to describe the evolution of heavy flavors produced in relativistic heavy-ion collisions. The in-medium energy loss of heavy quarks is described using our modified Langevin equation that incorporates both quasi-elastic scatterings and the medium-induced gluon radiation. The space-time profiles of the fireball is described by a (2+1)-dimensional hydrodynamics simulation. A hybrid model of fragmentation and coalescence is utilized for heavy quark hadronization, after which the produced heavy mesons together with the soft hadrons produced from the bulk QGP are fed into the hadron cascade UrQMD model to simulate the subsequent hadronic interactions. We find that the medium-induced gluon radiation contributes significantly to heavy quark energy loss at high pT; heavy-light quark coalescence enhances heavy meson production at intermediate pT; and scatterings inside the hadron gas further suppress the D meson RAA at large pT and enhance its v2. Our calculations provide good descriptions of heavy meson suppression and elliptic flow observed at both the LHC and RHIC.

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Section: B Heavy Quark Evolution In a Realistic Mediummentioning

confidence: 99%

Section: A a Hybrid Model Of Fragmentation And Coalescencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy loss, hadronization, and hadronic interactions of heavy flavors in relativistic heavy-ion collisions

2015

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“…Hydrodynamic model with event-by-event (e-by-e) fluctuating initial conditions is considered to be one of the most successful frameworks in recent times to study the evolution of the hot and dense Quark-Gluon-Plasma (QGP) produced in collisions of heavy nuclei at the relativistic energies [1][2][3][4][5][6][7][8][9]. Hydrodynamic model with smooth initial density distribution was used for a long time earlier to explain the particle spectra and large elliptic flow of hadrons produced in heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) [10].…”

Section: Introductionmentioning

confidence: 99%

Anisotropic flow of thermal photons at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider

2017

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We calculate elliptic and triangular flow parameters of thermal photons using an event-by-event hydrodynamic model with fluctuating initial conditions at 200A GeV Au+Au collisions at RHIC and at 2.76A TeV Pb+Pb collisions at the LHC for three different centrality bins. The photon elliptic flow shows strong centrality dependence where v2(pT ) increases towards peripheral collisions both at RHIC and at the LHC energies. However, the triangular flow parameter does not show significant dependence to the collision centrality. The elliptic as well as the triangular flow parameters found to underestimate the PHENIX data at RHIC by a large margin for all three centrality bins. We calculate pT spectrum and anisotropic flow of thermal photons from 200A GeV Cu+Cu collisions at RHIC for 0-20% centrality bin and compare with the results with those from Au+Au collisions. The production of thermal photon is found to decrease significantly for Cu+Cu collisions compared to Au+Au collisions. However, the effect of initial state fluctuation is found to be more pronounced for anisotropic flow resulting in larger v2 and v3 for Cu+Cu collisions. We study the correlation between the anisotropic flow parameters and the corresponding initial spatial anisotropies from their event by event distributions at RHIC and at the LHC energies. The linear correlation between v2 and ǫ2 is found be stronger compared to the correlation between v3 and ǫ3. In addition, the correlation coefficient is found to be larger at LHC than at RHIC.

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“…In particular, the observation of the large anisotropic flow patterns indicates the collective behavior of the bulk QGP, which implies the strong interactions among the constituents. Various relativistic hydrodynamic models have been developed and very successful in explaining the space-time evolution of the bulk QGP [2][3][4][5][6][7][8][9][10]. As another remarkable feature of the strongly coupled QGP, jet quenching, namely the large energy loss of jets, has also been revealed in heavy ion collisions [11,12].…”

Section: Introductionmentioning

confidence: 99%