Fast hadron freeze-out generator. II. Noncentral collisions

Amelin, N. S.; Lednický, R.; Lokhtin, I.; Malinina, L.; Snigirev, A.; Karpenko, Iu.; Sinyukov, Yu. M.; Arsene, I. C.; Bravina, L.

doi:10.1103/physrevc.77.014903

Cited by 68 publications

(89 citation statements)

References 34 publications

(53 reference statements)

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“…In the model used for present paper (HYDJET++); the hydro dynamical processes are parameterized on freeze-out hyper surfaces of the expanding fireball [16,17]; and forms in superposition with hard particles the simulated distributions. In present model [18,19], the expanding fireball is modulated by in medio collisions [20][21][22] and radiation [23,24].…”

Section: Methodsmentioning

confidence: 99%

Investigation of particle coherence in Pb+Pb collisions at LHC

Johansson¹

2016

EPJ Web Conf.

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Abstract. The observed particle distributions in Pb+Pb collisions at LHC are investigated. Monte Carlo simulations of the azimuthal anisotropy i.e. flow, and transverse momentum spectra provide insights in e.g. hadron genesis and in medio scattering. Simulations are made using the HYDJET++ model, which is based on parameterization of soft processes and generation of hard physics. The second and third event planes are implemented at this stage, thus generating the second and third order flows which are believed to provide the main part of the observed azimuthal distribution. Here, the ellipticity driven elliptic, and fluctuation driven triangular flow are used as differentiated observables. The elliptic and triangular flow are simulated in agreement with experimental data for pT < 3.5 GeV and centralities 0 − 50%. In connection to the simulation of azimuthal anisotropy, the particle transverse momentum spectra are simulated with accuracy, which provides a high degree of reproduction of geometric features. In extension to these simulations, the dependences on fragmentation processes are investigated through the second and third order flows, which are displaying sensitivity to particle coherence. In the simulations, particle coherence is thus seen to manifest itself through the azimuthal anisotropy.

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Section: Methodsmentioning

confidence: 99%

Investigation of particle coherence in Pb+Pb collisions at LHC

Johansson¹

2016

EPJ Web Conf.

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“…The soft part of HYDJET++ is the thermal hadronic state generated on the chemical and thermal freeze-out hypersurface obtained from the parameterization of relativistic hydrodynamics with a given freeze-out condition [42,43]. The first and foremost modification which we have done in soft part is to change the nuclear density profile function for deformed uranium nucleus as discussed in above section.…”

Section: Soft 'Thermal' Hadron Productionmentioning

confidence: 99%

Transverse momentum distribution and elliptic flow of charged hadrons in $$U+U$$ U + U collisions at $$\sqrt{s_{NN}}=193$$ s NN = 193 GeV using HYDJET++

et al. 2018

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Recent experimental observations of the charged hadron properties in U + U collisions at 193 GeV contradict many of the theoretical models of particle production including two-component Monte Carlo Glauber model. The experimental results show a small correlation between the charged hadron properties and the initial geometrical configurations (e.g. body-body, tip-tip etc.) of U +U collisions. In this article, we have modified the Monte Carlo HYDJET++ model to study the charged hadron production in U + U collisions at 193 GeV center-of-mass energy in tip-tip and body-body initial configurations. We have modified the hard as well as soft production processes to make this model suitable for U + U collisions. We have calculated the pseudorapidity distribution, transverse momentum distribution and elliptic flow distribution of charged hadrons with different control parameters in various geometrical configurations possible for U + U collision. We find that HYDJET++ model supports a small correlation between the various properties of charged hadrons and the initial geometrical configurations of U + U collision. Further, the results obtained in modified HYDJET++ model regarding dn ch /dη and elliptic flow (v 2 ) suitably matches with the experimental data of U + U collisions in minimum bias configuration.

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“…To calculate the particle yields one has to know the fireball volume. It is proportional to the mean number of wounded nucleons at a given impact parameter b , see [11][12][13] for details. After the chemical freeze-out, the system of hadrons continues to expand until the thermal contact between the particles is lost.…”

Section: Hydrodynamics With Jets (Hydjet++)mentioning

confidence: 99%

“…In HYDJET++ the soft state is represented by a hydro-like system [12,13]. It is coupled to a hard multiparton state, where the hard partons are suffering the collisional and gluon radiation losses [14] when propagating the dense and hot medium.…”

Section: Hydrodynamics With Jets (Hydjet++)mentioning

confidence: 99%

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Hydro and Jets in Relativistic Heavy-Ion Collisions

et al. 2016

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Abstract. We apply HYDJET++ model, which contains the treatment of both soft and hard processes, to study the heavy-ion collisions at LHC energies. The interplay of parametrised hydrodynamics and jets describes many features of the development of particle anisotropic flow including the break-up of mass hierarchy of elliptic and triangular flow, the falloff of the flow at certain transverse momentum and violation of the number-ofconstituent-quark (NCQ) scaling at LHC energies compared to the lower ones. Other signals, such as long-range dihadron correlations (ridge) and event-by-event (EbyE) fluctuations of the flow are also discussed. Model calculations demonstrate a good agreement with the available experimental data.

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Fast hadron freeze-out generator. II. Noncentral collisions

Cited by 68 publications

References 34 publications

Investigation of particle coherence in Pb+Pb collisions at LHC

Investigation of particle coherence in Pb+Pb collisions at LHC

Transverse momentum distribution and elliptic flow of charged hadrons in $$U+U$$ U + U collisions at $$\sqrt{s_{NN}}=193$$ s NN = 193 GeV using HYDJET++

Hydro and Jets in Relativistic Heavy-Ion Collisions

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