Further developments of a multi-phase transport model for relativistic nuclear collisions

Lin, Zi-Wei; Zheng, Liang

doi:10.1007/s41365-021-00944-5

Cited by 87 publications

(27 citation statements)

References 280 publications

(487 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this work, we use a multiphase transport model (AMPT) [43,46] to perform calculation in most central collision systems. The AMPT model consists of four main components, which describe the four main processes in heavy ion collisions.…”

Section: Ampt Model and Analysis Methodsmentioning

confidence: 99%

“…There are two versions of AMPT: one for a string melting mechanism, in which a partonic phase is generated from excited strings in the HIJING model, and a simple quark coalescence model is used to combine the partons into hadrons; the other for the default AMPT version which only undergoes a pure hadron gas phase. AMPT model has been widely used in heavy ion collision at RHIC and LHC [43,46,[51][52][53][54] and the detailed introduction can be found therein. In the present work, we use the string-melting version AMPT.…”

Section: Ampt Model and Analysis Methodsmentioning

confidence: 99%

“…In order to match the experimental data [56], vertexes where α cluster lays in the triangularliked 12 C are placed 3.10 fm away from each other [9,21]. For the tetrahedral pattern of 16 O, we assign the side length as 3.42 fm [57,58]. Meanwhile, α clusters are formed by nucleons with Woods-Saxon distributions.…”

Section: Ampt Model and Analysis Methodsmentioning

confidence: 99%

See 2 more Smart Citations

System dependence of away-side broadening and $α$-clustering light nuclei structure effect in dihadron azimuthal correlations

Wang,

Zhang,

2021

Preprint

View full text Add to dashboard Cite

We investigate the effect of α cluster in relativistic collisions via di-hadron azimuthal correlation. A collision system scan involving α-clustered 12 C and 16 O is studied by using a multiphase transport model in the most central collisions at √ sNN = 6.37 TeV. We compare the correlation functions of different configurations and calculate root-mean-square width and kurtosis in the away-side region. The momentum dependence of di-hadron azimuthal correlation is also presented. The results show substantial distinction in correlation functions between Woods-Saxon distribution and α-clustered structures. We argue that the difference related to jet quenching is originated from initial geometry anisotropy. This work proposed that di-hadron azimuthal correlation is a potential probe to distinguish α-clustered nuclei.

show abstract

Section: Ampt Model and Analysis Methodsmentioning

confidence: 99%

Section: Ampt Model and Analysis Methodsmentioning

confidence: 99%

See 1 more Smart Citation

System dependence of away-side broadening and $α$-clustering light nuclei structure effect in dihadron azimuthal correlations

Wang,

Zhang,

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Afterwords we choose the case of t max,h = 100 f m/c for the following calculations. We would mention that the AMPT model has been successfully used to simulate physics in heavyion collisions at the RHIC and LHC energies [36,49,50] and the detailed parameter configurations can be found therein.…”

Section: A Ampt Modelmentioning

confidence: 99%

Collision centrality and system size dependences of light nuclei production via dynamical coalescence mechanism

Cheng,

Zhang,

2021

Preprint

View full text Add to dashboard Cite

Light (anti-)nuclei in relativistic heavy-ion collisions are considered to be formed by the coalescence mechanism of (anti-)nucleons in the present work. Using a dynamical phase-space coalescence model coupled with a multi-phase transport (AMPT) model, we explore the formation of light clusters such as deuteron, triton and their anti-particles in different centralities for 197 Au + 197 Au collisions at √ sNN = 39 GeV. The calculated transverse momentum spectra of protons, deuterons, and tritons are comparable to those of experimental data from the RHIC-STAR collaboration. Both coalescence parameters B2 for (anti-)deuteron and B3 for triton increase with the transverse momentum as well as the collision centrality, and they are comparable with the measured values in experiments. The effect of system size on the production of light nuclei is also investigated by 10 B + 10 B, 16 O + 16 O, 40 Ca + 40 Ca, and 197 Au + 197 Au systems in central collisions. The resultsshow that yields of light nuclei increase with system size, while the values of coalescence parameters present an opposite trend. It is interesting to see that the system size, as well as the centrality dependence of BA (A = 2, 3), falls into the same group, which further demonstrates production probability of light nuclei is proportional to the size of the fireball. Furthermore, we compare our coalescence results with other models, such as the thermal model and analytic coalescence model, it seems that the description of light nuclei production is consistent with each other.

show abstract

“…In this study, a multiphase transport (AMPT) model [31][32][33] was adopted to simulate Au + Au collisions at √ s N N = 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV. Energy dependence of C V was obtained by the above introduced method and compared with results extracted through the same temperature fluctuation method by the Hadron Matter (HM) [28], Hadron Matter via Quark Gluon Matter [28], Quark Gluon Matter (QGM) [28], Hadron Resonance Gas (HRG) models as well as data of the STAR Collaboration [29,34].…”

Section: Introductionmentioning

confidence: 99%

Specific heat and its high-order moments in relativistic heavy-ion collisions from a multiphase transport model

Cao¹,

Zhang²,

Ma³

2021

Preprint

View full text Add to dashboard Cite

We studied the energy dependence of specific heat extracted from the fluctuation of temperature fitted by the pT spectra at √ sNN = 7.7 GeV to 200 GeV in Au + Au collisions by using AMPT model. The results were compared with those from other models and some difference at low √ sNN was found. To explain the difference and describe the properties of the hot matter at low √ sNN , we derived new quantities C ξ v and C ξ * v for describing specific heat in heavy-ion collisions. We found that the alternative method could describe thermal properties of the matter involving C ξ * v together with its high order moments, namely skewness and kurtosis, extracted from the event-by-event distribution of C ξ * v . The proposed observables could shed light on the QCD phase transition along with critical point in heavy-ion collisions.

show abstract

Further developments of a multi-phase transport model for relativistic nuclear collisions

Cited by 87 publications

References 280 publications

System dependence of away-side broadening and $α$-clustering light nuclei structure effect in dihadron azimuthal correlations

System dependence of away-side broadening and $α$-clustering light nuclei structure effect in dihadron azimuthal correlations

Collision centrality and system size dependences of light nuclei production via dynamical coalescence mechanism

Specific heat and its high-order moments in relativistic heavy-ion collisions from a multiphase transport model

Contact Info

Product

Resources

About