Light nuclei production in Au+Au collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msqrt><mml:mrow><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">NN</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:msqrt></mml:math> = 5–200 GeV from JAM model

Liu, Hui; Zhang, Dingwei; He, S.; Sun, Kai-Jia; Yu, N.; Luo, X.

doi:10.1016/j.physletb.2020.135452

Cited by 44 publications

(26 citation statements)

References 50 publications

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“…The following section presents comparisons of different experimental data (ALICE [33,36,37], STAR [38,39], E866 [39], E877 [39] and PHENIX [39] ) to the simulation results from UrQMD.…”

Section: Resultsmentioning

confidence: 99%

Understanding the energy dependence of $$B_2$$ in heavy ion collisions: interplay of volume and space-momentum correlations

et al. 2021

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The deuteron coalescence parameter $$B_2$$ B 2 in proton+proton and nucleus+nucleus collisions in the energy range of $$\sqrt{s_{NN}}=$$ s NN = 900–7000 GeV for proton + proton and $$\sqrt{s_{NN}}=$$ s NN = 2–2760 GeV for nucleus + nucleus collisions is analyzed with the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport model, supplemented by an event-by-event phase space coalescence model for deuteron and anti-deuteron production. The results are compared to data by the E866, E877, PHENIX, STAR and ALICE experiments. The $$B_2$$ B 2 values are calculated from the final spectra of protons and deuterons. At lower energies, $$\sqrt{s_{NN}}\le 20$$ s NN ≤ 20 GeV, $$B_2$$ B 2 drops drastically with increasing energy. The calculations confirm that this is due to the increasing freeze-out volume reflected in $$B_2\sim 1/V$$ B 2 ∼ 1 / V . At higher energies, $$\sqrt{s_{NN}}\ge 20$$ s NN ≥ 20 GeV, $$B_2$$ B 2 saturates at a constant level. This qualitative change and the vanishing of the volume suppression is shown to be due to the development of strong radial flow with increasing energy. The flow leads to strong space-momentum correlations which counteract the volume effect.

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“…The following section presents comparisons of different experimental data (ALICE [33,36,37], STAR [38,39], E866 [39], E877 [39] and PHENIX [39] ) to the simulation results from UrQMD.…”

Section: Resultsmentioning

confidence: 99%

Understanding the energy dependence of $$B_2$$ in heavy ion collisions: interplay of volume and space-momentum correlations

et al. 2021

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“…In this subsection, we study the multi-particle yield correlation tp/d 2 , which has recently attracted extensive attention [32,[59][60][61][62][63] and considered to be a probe for the structure of the QCD phase diagram [34]. Compared with other yield ratios discussed in the last subsection, it has been observed by the STAR experiment to show a nonmonotonic trend as the function of √ s NN in the most central Au-Au collisions as shown by the solid circles and squares with error bars in Fig.…”

Section: E Multi-particle Yield Correlation Tp/dmentioning

confidence: 99%

“…Such production mechanism possesses its unique characteristics. Many specific models and/or event-generators such as hybrid dynamical model (iEBE-MUSIC) [32], the Ultra-relativistic-Quantum-Molecular-Dynamics model (UrQMD) [33], Jet AA Mi-croscopic Transportation Model (JAM) [34], the parton and hadron cascade model (PACIAE) [35], etc., have been developed to include light nuclei formation via the nucleon coalescence and provided nice explanations for series of observables. Besides these two mechanisms, transport scenario is also proposed for light nuclei production, which assumes the existence of light nuclei in strongly-interacting hadronic matter and aims to study how light nuclei evolve during the hadronic system evolution [36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

“…Such behaviors are considered to be possible signals for the critical end point (CEP) of the first order phase transition from hadronic phase to quark-gluon phase in some works such as in Refs. [34,46]. As we know, the whole process of the relativistic heavy-ion collision is a very complicated process, involving many components, e.g., hard parton scatterings, collective expansion evolution, hadronization, hadronic rescatterings, resonance decays and so on.…”

Section: Introductionmentioning

confidence: 99%

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Production characteristics of light (anti-)nuclei from (anti-)nucleon coalescence in heavy ion collisions at energies employed at the RHIC beam energy scan

Zhao,

Feng,

Shao

et al. 2022

Preprint

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With the kinetic freeze-out nucleons and antinucleons obtained from the quark combination model, we study the production of light nuclei and antinuclei in the (anti-)nucleon coalescence mechanism in relativistic heavy ion collisions. We derive analytic formulas of the momentum distributions of different light nuclei and apply them to compute transverse momentum (p T ) spectra of (anti-)deuterons (d, d) and (anti-)tritons (t, t) in Au-Au collisions at √ s NN =7.7, 11.5, 19.6, 27, 39, 54.4 GeV. We find that the experimental data available for these p T spectra can be well reproduced. We further study the yields and yield ratios of different light (anti-)nuclei and naturally explain their interesting behaviors as a function of the collision energy. We especially point out that the multi-particle yield ratio tp/d 2 should be carefully corrected from hyperon weak decays for protons to probe the production characteristics of light nuclei. All of our results show that the coalescence mechanism for (anti-)nucleons plays a dominant role for the production of light nuclei and antinuclei at the RHIC beam energy scan energies.

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“…Presently, there are many successful phenomenological models widely used to describe the production of hadrons and light nuclei in relativistic heavy-ion collisions 23 , 24 , such as the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) approach 25 , a Multiphase Transport (AMPT) model 26 , and the Simulating Many Accelerated Strongly interacting Hadrons (SMASH) approach 27 . For the light (anti)nuclei production in terms of their yields, yield ratios, -spectra, flow, etc., either the coalescence models 28 – 35 or the statistical thermal approaches 36 – 39 are usually employed. The lightest nuclear cluster, i.e., deuterons, has been especially studied to shed light on the nuclei formation process.…”

Section: Introductionmentioning

confidence: 99%

Study of nuclear modification factors of deuteron and anti-deuteron in Pb–Pb collisions at $$\sqrt{s_{\mathrm{NN}}} =2.76\,\hbox {TeV}$$

Liu

She

et al. 2022

Sci Rep

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The nuclear modification factors ($$R_{AA}$$ R AA ) of d and $$\bar{d}$$ d ¯ have been studied using the parton and hadron cascade model plus the dynamically constrained phase space coalescence model in peripheral (40–60%) and central (0–5%) Pb–Pb collisions at $$\sqrt{s_{NN}}=2.76\,\hbox {TeV}$$ s NN = 2.76 TeV with $$|y|<0.5, p_T<20.0 \,\hbox {GeV}/\hbox {c}$$ | y | < 0.5 , p T < 20.0 GeV / c . It is found that the $$R_{AA}$$ R AA of $$d, \bar{d}$$ d , d ¯ is similar to that of hadrons ($$\pi ^\pm , p, \bar{p}$$ π ± , p , p ¯ ) and the $$R_{AA}$$ R AA of antiparticles is the same as that of particles. The suppression effect of d is more significant than that of baryons and mesons in the high-$$p_T$$ p T region. The suppression of $$R_{AA}$$ R AA at high-$$p_T$$ p T strongly depends on event centrality and mass of the particles, i.e., the central collision is more suppressed than the peripheral collision. Besides, the yield ratios and double ratios for different particle species, and the coalescence parameter $$B_2$$ B 2 for ($$d, \bar{d}$$ d , d ¯ ) in pp and Pb–Pb collisions are discussed, respectively. It is observed that the yield ratios and double ratios of d to p and p to $$\pi $$ π are similar to those of their anti-particles in three different collision systems, suggesting that the suppressions of matter ($$\pi ^{+}, p, d$$ π + , p , d ) and the corresponding antimatter ($$\pi ^{-},\bar{p},\bar{d}$$ π - , p ¯ , d ¯ ) are around the same level.

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Light nuclei production in Au+Au collisions at sNN = 5–200 GeV from JAM model

Cited by 44 publications

References 50 publications

Understanding the energy dependence of $$B_2$$ in heavy ion collisions: interplay of volume and space-momentum correlations

Understanding the energy dependence of $$B_2$$ in heavy ion collisions: interplay of volume and space-momentum correlations

Production characteristics of light (anti-)nuclei from (anti-)nucleon coalescence in heavy ion collisions at energies employed at the RHIC beam energy scan

Study of nuclear modification factors of deuteron and anti-deuteron in Pb–Pb collisions at $$\sqrt{s_{\mathrm{NN}}} =2.76\,\hbox {TeV}$$

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