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Energy dependence of space-time parameters of pion emission region at freeze-out is studied for collisions of various ions and for all experimentally available energies. The using of femtoscopic radii scaled on the averaged radius of…

核实验 · 物理学 2016-06-22 V. A. Okorokov

We review the apparently hydrodynamic behaviour of low transverse momentum particles (p_T < 1.5 GeV/c) produced in central and semicentral (b < 7 fm) heavy ion collisions at RHIC. We investigate the impact parameter dependence of various…

核理论 · 物理学 2009-11-07 Peter F. Kolb

The transverse momentum distributions of the identified particles produced in small collision systems at the Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) have been analyzed by four models. The first two models…

核理论 · 物理学 2018-10-05 Hai-Ling Lao , Fu-Hu Liu , Bao-Chun Li , Mai-Ying Duan , Roy A. Lacey

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…

核理论 · 物理学 2020-06-30 V. Yu. Naboka , Yu. M. Sinyukov , G. M. Zinovjev

Elliptic flow is an interesting probe of the dynamical evolution of the dense system formed in the ultrarelativistic heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC). The elliptic flow dependences on transverse momentum,…

核实验 · 物理学 2019-08-14 Carla M. Vale

In the paper energy dependence of femtoscopy characteristics of pion emission region at freeze-out is investigated for collisions of various ions and for all experimentally available energies. For the first time the normalized values of…

核实验 · 物理学 2016-05-17 V. A. Okorokov

In hydrodynamical modelling of ultrarelativistic heavy-ion collisions the freeze-out is typically assumed to take place on a surface of constant temperature or energy density. In this work we apply a dynamical freeze-out criterion, which…

核理论 · 物理学 2015-06-17 Hannu Holopainen , Pasi Huovinen

The geometric substructure of the particle-emitting source has been characterized via two-particle interferometry by the STAR collaboration for all energies and colliding systems at RHIC. We present systematic studies of charged pion…

核实验 · 物理学 2007-05-23 Z. Chajecki

Using a hydrodynamic model, we predict the transverse momentum dependence of the spectra and the elliptic flow for different hadrons in Au+Au collisions at sqrt(s) = 130 A GeV. The dependence of the differential and p_t-integrated elliptic…

高能物理 - 唯象学 · 物理学 2008-11-26 P. Huovinen , P. F. Kolb , U. Heinz , P. V. Ruuskanen , S. Voloshin

Non-central heavy ion collisions create an out-of-plane-extended participant zone that expands toward a more round state as the system evolves. The recent RHIC Beam Energy Scan at sqrt{s_{NN}} of 7.7, 11.5, and 39 GeV provide an opportunity…

核实验 · 物理学 2015-05-28 Christopher Anson

We perform a systematic analysis of several HBT parameters in heavy ion collisions from $E_{\rm beam}=2$ AGeV to $\sqrt {s_{\rm NN}}=200$ GeV within the UrQMD transport approach and compare the results to experimental data where available.…

核理论 · 物理学 2008-11-26 Qingfeng Li , Marcus Bleicher , Horst Stoecker

We use a hydrodynamic model to study the space-time evolution transverse to the beam direction in ultrarelativistic heavy-ion collisions with nonzero impact parameters. We focus on the influence of early pressure on the development of…

核理论 · 物理学 2009-10-09 P. F. Kolb , J. Sollfrank , P. V. Ruuskanen , U. Heinz

The pion source as seen through HBT correlations at RHIC energies is investigated within the UrQMD approach. We find that the calculated transverse momentum, centrality, and system size dependence of the Pratt-HBT radii $R_L$ and $R_S$ are…

核理论 · 物理学 2009-02-05 Qingfeng Li , Marcus Bleicher , Horst Stoecker

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 space-time structure of the multipion system created in central relativistic heavy-ion collisions is investigated. Using the microscopic transport model UrQMD we determine the freeze-out hypersurface from equation on pion density…

核理论 · 物理学 2013-01-29 D. Anchishkin , V. Vovchenko , L. P. Csernai

Based on the (3+1)-dimensional hydrodynamic model, the space-time evolution of hot and dense nuclear matter produced in non-central relativistic heavy-ion collisions is discussed. The elliptic flow parameter v_2 is obtained by Fourier…

核理论 · 物理学 2007-05-23 Tetsufumi Hirano

We continue the analysis of the preceding talk with a discussion of the elliptic flow and the HBT pion correlation radii. It is shown that the thermal model can be extended to describe these phenomena. The description of the elliptic flow…

核理论 · 物理学 2009-11-07 Wojciech Broniowski , Anna Baran , Wojciech Florkowski

Pion interferometry ("HBT") measurements relative to the reaction plane provide an estimate of the transverse source anisotropy at freeze-out, which probes the system dynamics and evolution duration. Measurements by the STAR Collaboration…

核实验 · 物理学 2019-08-14 M. A. Lisa

Hydrodynamics merged with single-freeze-out statistical hadronization is used to describe the midrapidity hadron production in relativistic heavy-ion collisions at the highest RHIC energies and to make predictions for the LHC. Thermodynamic…

核理论 · 物理学 2008-11-26 Mikolaj Chojnacki , Wojciech Florkowski , Wojciech Broniowski , Adam Kisiel

A comprehensive viscous hydrodynamic fit of spectra and elliptic flow for charged hadrons and identified pions and protons from Au+Au collisions of all centralities measured at the Relativistic Heavy Ion Collider is performed and used as…

核理论 · 物理学 2012-10-08 Chun Shen , Ulrich W. Heinz , Pasi Huovinen , Huichao Song