Elliptic flow of deuterons in relativistic heavy-ion collisions

Che Ming Ko; Yongseok Oh

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Elliptic flow of deuterons in relativistic heavy-ion collisions

Yongseok Oh, Che Ming Ko

Nuclear Theory · Submitted 23 Jul 2007

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The deviation of deuteron elliptic flow from the constituent nucleon number scaling expected from the coalescence model and the comparison with the experimental data are discussed in connection to the allowed nucleon phase space in these reactions.

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Using a dynamical model based on the $NN \to d\pi$, $NNN \to dN$, and $NN\pi \to d\pi$ reactions and measured proton and pion transverse momentum spectra and elliptic flows, we study the production of deuterons and their elliptic flow in heavy ion collisions at RHIC. The results are compared with those from the coalescence model. The deviation of deuteron elliptic flow from the constituent nucleon number scaling expected from the coalescence model and the comparison with the experimental data are discussed in connection to the allowed nucleon phase space in these reactions.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Using a dynamical model based on the $NN \to d\pi$, $NNN \to dN$, and $NN\pi \to d\pi$ reactions and measured proton and pion transverse momentum spectra and elliptic flows, we study the production of deuterons and their elliptic flow in heavy ion collisions at RHIC.	method 0.58	0.91	0.08	asserted 0.84
s1	The results are compared with those from the coalescence model.	method 0.75	0.67	0.04	asserted 0.83
s2	The deviation of deuteron elliptic flow from the constituent nucleon number scaling expected from the coalescence model and the comparison with the experimental data are discussed in connection to the allowed nucleon phase space in these reactions.	interpretation 0.87	0.71	0.33	unclear 0.59

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Original abstract

Using a dynamical model based on the $NN \to d\pi$, $NNN \to dN$, and $NN\pi \to d\pi$ reactions and measured proton and pion transverse momentum spectra and elliptic flows, we study the production of deuterons and their elliptic flow in heavy ion collisions at RHIC. The results are compared with those from the coalescence model. The deviation of deuteron elliptic flow from the constituent nucleon number scaling expected from the coalescence model and the comparison with the experimental data are discussed in connection to the allowed nucleon phase space in these reactions.

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3 arXiv papers cite this in 3 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 1 sentence without a confident label

Cites it as background 2 papers

More recently, a kinetic model has been developed that accounts for the dissociation and regeneration of light nuclei through pion-catalyzed reactions during the expansion of the hadronic matter [ref] .

Anisotropic Flow of light (anti-)(hyper-)nuclei in Pb+Pb Collision at $\sqrt{s_{NN}}=5.36$ TeV · INTRODUCTION · 0.97
To fully understand these results requires detailed studies based on microscopic models for light cluster production in high energy heavy-ion collisions [ref] .

Yield ratio of hypertriton to light nuclei in heavy-ion collisions from $\rm \sqrt{s_{NN}}$ = 4.9 GeV to 2.76 TeV · The $S_2=$ ratio in the coalescence model · 0.87

What it cites · 34 sentences without a confident label

Uses data or values from 3 papers

The inverse slope parameter in the nucleon $p_T^$ spectrum [Eq.([ref])] is determined to be $T_eff=295$ MeV by using the experimental data of Ref. [ref] for the minimum bias proton $p_T^$ spectrum.

Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV · Nucleon spectrum and elliptic flow · 1.00
For the pion $v_2^$, it is parameterized as in Eq. ([ref]), [equation] with $α_π^ = 0.184$, $β_π^=0.461$ GeV, and $λ_π^=0.547$ GeV to fit the PHENIX experimental data [ref] .

Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV · Pion spectrum and elliptic flow · 0.99
Taking the effective volume of the hadronic matter at freeze-out in minimum bias collisions to be $V≈3,700 fm^3$, which is about $1/3$ of the estimated hadronic matter volume in central Au+Au collisions at $√(s_NN^)=200$ GeV [ref] , we obtain $γ_N^ = 0.021$ for the value of the parameter in Eq. ([ref]).

Pentaquark baryon production at the Relativistic Heavy Ion Collider · Nucleon spectrum and elliptic flow · 0.88

Compares with 2 papers

Compared to the experimental data shown by filled circles from the PHENIX Collaboration and by filled squares from the STAR Collaboration, our model can describe both reasonably well, particularly those from the PHENIX Collaboration [ref] .

Elliptic flow for phi mesons and (anti)deuterons in Au+Au collisions at sqrt(s_NN) = 200 GeV · Deuteron spectrum and elliptic flow from two-body reactions · 0.85
Our parametrization gives similar results in the measured $p_T^$ region as the parametrization $a tanh(b p_T^ + c)$, which was introduced in Ref. [ref] for quarks.

Effect of resonance decays on hadron elliptic flows · Nucleon spectrum and elliptic flow · 0.98

Cites as support 4 papers

Since the elliptic flow of particles during the hadronic evolution does not change much as the initial spatial asymmetry through which the elliptic flow is generated has decreased significantly during the evolution of the partonic stage [ref] , we can therefore calculate the deuteron yield and elliptic flow based on the deuteron production rate from nucleons at freeze out.

Partonic effects on the elliptic flow at relativistic heavy ion collisions · Introduction · 0.97
Although there is no experimental information on the nucleon $v_2^$ at very low $p_T^$ region, hydrodynamic model studies [ref] show that the nucleon $v_2^$ produced in heavy ion collisions at RHIC has non-negative values [ref] .

Elliptic flow at SPS and RHIC: from kinetic transport to hydrodynamics · Nucleon spectrum and elliptic flow · 0.97
Although there is no experimental information on the nucleon $v_2^$ at very low $p_T^$ region, hydrodynamic model studies [ref] show that the nucleon $v_2^$ produced in heavy ion collisions at RHIC has non-negative values [ref] .

Radial and elliptic flow at RHIC: further predictions · Nucleon spectrum and elliptic flow · 0.97

Cites as background 4 papers

In the coalescence model, the probability for the production of a bound composite particle from a many-particle system is determined by the overlap of the wave functions of coalescing particles with the internal wave function of the composite particle [ref] .

Nuclear Clusters as a Probe for Expansion Flow in Heavy Ion Reactions at 10-15AGeV · Deuteron production in the coalescence model · 0.89
The elliptic flow of particles in heavy ion collisions is a measure of the strength of the second Fourier coefficient in the azimuthal angle distribution of particle transverse momentum relative to the reaction plane [ref] .

Flow Study in Relativistic Nuclear Collisions by Fourier Expansion of Azimuthal Particle Distributions · Introduction · 0.99
Significant information on the properties of the hot dense matter formed during the initial stage of heavy ion collisions has been obtained from the study of elliptic flow [ref] .

The role of elliptic flow correlations in the discovery of the sQGP at RHIC · Introduction · 0.85

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