Detection of source inhomogeneity through event-by-event two-pion Bose–Einstein correlations

Ren, Yan-Yu; Zhang, Weining; Liu, Jianli

doi:10.1016/j.physletb.2008.10.005

Cited by 10 publications

(15 citation statements)

References 38 publications

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“…In this section, we show results from the integrated dynamical model starting from conventional smooth initial entropy density distributions to describe a high-energy heavy ion reaction as a whole at LHC [202,203,204,205,206,207] NeXus (3+1)-D Ideal Ren et al [209] NeXus (3+1)-D Ideal Holopainen et al [212,213,214] MC-Glauber (2+1)-D Ideal Qiu and Heinz [215] MC-Glauber, MC-KLN (2+1)-D Ideal Petersen et al [93,130,131,132,133,134,135] UrQMD (3+1)-D Ideal Werner et al [137,138,139,140] EPOS (3+1)-D Ideal Alver et al [190] Parametrisation (2+1)-D Viscous Schenke et al [219,220,221] MC-Glauber, IP-Glasma (3+1)-D Viscous Chaudhuri et al [226,228] Parametrisation (2+1)-D Viscous Bozek and Broniowski [229] MC-Glauber (3+1)-D Viscous Pang et al [230] AMPT (3+1)-D Ideal Zhang et al [231] MC-Glauber…”

Section: Results From Smooth Initial Profilementioning

confidence: 99%

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Integrated dynamical approach to relativistic heavy ion collisions

Hirano

Huovinen

Murase

et al. 2013

Progress in Particle and Nuclear Physics

120

110

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We review integrated dynamical approaches to describe heavy ion reaction as a whole at ultrarelativistic energies. Since final observables result from all the history of the reaction, it is important to describe all the stages of the reaction to obtain the properties of the quark gluon plasma from experimental data. As an example of these approaches, we develop an integrated dynamical model, which is composed of a fully (3+1) dimensional ideal hydrodynamic model with the state-of-the-art equation of state based on lattice QCD, and subsequent hadronic cascade in the late stage. Initial conditions are obtained employing Monte Carlo versions of the Kharzeev-LevinNardi model (MC-KLN) or the Glauber model (MC-Glauber). Using this integrated model, we first simulate relativistic heavy ion collisions at the RHIC and LHC energies starting from conventional smooth initial conditions. We next utilise each Monte Carlo samples of initial conditions on an event-by-event basis and perform event-by-event dynamical simulations to accumulate a large number of minimum bias events. A special attention is paid to performing the flow analysis as in experiments toward consistent comparison of theoretical results with experimental data.

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Section: Results From Smooth Initial Profilementioning

confidence: 99%

“…The NeXus event generator and hydrodynamic approach was further utilised to evaluate two-pion correlation functions on event-by-event basis by Ren et al [209]. The main motivation to consider initial fluctuations was to understand RHIC HBT data R out /R side ∼ 1 [210,211].…”

Section: Brief Overview Of Event-by-event Initial Conditionsmentioning

confidence: 99%

Integrated dynamical approach to relativistic heavy ion collisions

Hirano

Huovinen

Murase

et al. 2013

Progress in Particle and Nuclear Physics

120

110

View full text Add to dashboard Cite

show abstract

“…n {2} with large fluctuations, and the similar analysis was used in the investigations of the fluctuations of single-event HBT correlation functions [14,16,28]. Because the event number of collision is very huge (in principle it may reach any large number if prolonging experiment time), the number of the event subcollections will be large enough to overcome the influence of statistic fluctuations on the distributions.…”

Section: Fluctuations Of Pion Flow Harmonics and Hbt Correla-tion Fun...mentioning

confidence: 99%

Fluctuations of pion elliptic flow, triangular flow, and HBT correlation functions in ultrarelativistic heavy ion collisions

Hu¹,

Zhang²,

Ren³

2015

J. Phys. G: Nucl. Part. Phys.

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We investigate the fluctuations of pion elliptic flow, triangular flow, and Hanbury-Brown-Twiss (HBT) correlation functions for the hydrodynamic sources with fluctuating initial conditions in the heavy ion collisions of the Au-Au at √ s N N = 200 GeV and the Pb-Pb at √ s N N = 2.76 TeV. A method based on event-subcollection analysis is used to detect these fluctuations in ultrarelativistic heavy ion collisions. We introduce a granularity length to describe the granular inhomogeneity of the initial sources, and investigate its relationships with the fluctuations of the flow harmonics and HBT correlation functions. Our investigations indicate that the fluctuations of the triangular flow of event subcollections are sensitive to the granularity length of the initial source. This dependence provide a way to investigate the granular inhomogeneity of the initial source through analysing the fluctuations of triangular flow in ultrarelativistic heavy ion collisions.

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“…Recent researches on event-by-event two-pion Bose-Einstein correlations in smoothed particle hydrodynamics indicate that the particle-emitting sources produced at RHIC energy are inhomogeneous and there is a granular structure of many "lumps" (droplets) [43].…”

Section: Introductionmentioning

confidence: 99%

Imaging of granular sources in high energy heavy ion collisions

Yang

Zhang

Huo

et al. 2008

J. Phys. G: Nucl. Part. Phys.

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We investigate the source imaging for a granular pion-emitting source model in high energy heavy ion collisions. The two-pion source functions of the granular sources exhibit a two-tiered structure. Using a parametrized formula of granular two-pion source function, we examine the twotiered structure of the source functions for the imaging data of Au+Au collisions at Alternating Gradient Synchrotron (AGS) and Relativistic Heavy Ion Collider (RHIC). We find that the imaging technique introduced by Brown and Danielewicz is suitable for probing the granular structure of the sources. Our data-fitting results indicate that there is not visible granularity for the sources at AGS energies. However, the data for the RHIC collisions with the selections of 40 < centrality < 90% and 0.20 < k T < 0.36 GeV/c are better described by the model with granular emission than that of one Gaussian. The model with granular source has more parameters than the simple Gaussian, hence can describe more complicated shapes. 25.75.Nq, 25.75.Gz

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Detection of source inhomogeneity through event-by-event two-pion Bose–Einstein correlations

Cited by 10 publications

References 38 publications

Integrated dynamical approach to relativistic heavy ion collisions

Integrated dynamical approach to relativistic heavy ion collisions

Fluctuations of pion elliptic flow, triangular flow, and HBT correlation functions in ultrarelativistic heavy ion collisions

Imaging of granular sources in high energy heavy ion collisions

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